The Cooper/Kripke Inversion

The Cooper/Kripke Inversion is the fourteenth episode of the sixth season of The Big Bang Theory. The episode aired on January 31, 2013.

Summary
Sheldon is forced to work with his rival Barry Kripke and must also face his feelings for Amy. Raj and Howard spend a lot of money on some minature s that resemble them.

Extended Plot
Sheldon is busy at his whiteboard while Leonard tells him that his dinner is getting cold. Sheldon declines by telling his friends that he is, "Suckling at the informative bosom of Mother Physics." Penny quips that she gets hot when Sheldon talks dirty. Raj tells everyone of a website where one can buy a superhero action figure made in their own image. Both Howard and Leonard think that getting one is cool. Penny tells Leonard sarcastically if that is what he thinks is cool, then he should get one. Leonard sadly changes his mind. Sheldon doesn't want one because the hands of the action figure do not feature.

While Sheldon works at his whiteboard, he makes imaginary sports commentary as he completes his calculations finishing with his crowd shouting "Nobel! Nobel!" Barry Kripke enters and looks strangely at Sheldon's antics. Sheldon tells him not to look at his board as he flips it over. On the back is a drawing of a "really cool train" (a with jet engines) that he also doesn't want Kripke to see. Since they both are working on separate grant proposals for a new and the university can only submit one proposal, Kripke and Sheldon have been directed to work together. Sheldon dismisses the idea since he considers himself one of the great minds of their generation. He works on a level so rarified that he doesn't think Kripke could even imagine it.

Leonard and Howard are in Howard's lab and Leonard notices the strange place on the wall where Howard has hung one of his wedding pictures. The picture was hiding a hole in the wall left by a previous accident that Howard had with a laser. When Raj brings in their $500-a-piece action figures, Leonard asks how they can afford them. Howard replies that Raj is loaded, and that he (Howard) is able to afford it since his wife (Bernadette) has a really great job, that she comes with and s. Raj and Howard discover that their action figures do not look like them: Raj's action figure is African-American and Howard's action figure has a really big nose. Leonard is happy that Penny talked him out of getting one and he leaves Howard's lab looking smug.

Penny and Leonard are returning from the movies with Penny complaining that Leonard made them stay through all of the ending credits of the movie they just watched. Leonard defends himself by saying that sometimes there is a secret ending or outtakes shown during the ending credits. Penny reminds him that they just saw a documentary on the. Reaching the apartment they hear the Star Wars Darth Vader theme ("Imperial March") playing loudly. Leonard describes it as Sheldon's "I'm unhappy and about to destroy the planet" music. Leonard wants to hang out at Penny's apartment, but Penny wants to find out what is troubling Sheldon. Inside the apartment, Sheldon is found wearing an  wrapped around his head in the style of 's dark hood. Sheldon is sitting on the couch with his laptop, and Penny asks Sheldon whether he is OK. Sheldon replies that considering the music and the afghan, he is not OK. Leonard offers to make him some tea. Sheldon complains that he is being forced to work with Kripke and that he is outraged and not upset. He then tells Leonard that tea is (only) for when he is upset, to which Leonard changes the offered beverage to hot cocoa, and Sheldon enthusiastically responds to the change in beverage from tea to hot cocoa. Sheldon asks Penny if she knows what it is like to be paired with someone that is so incredibly annoying. Leonard then raises his hand. Sheldon continues that Kripke is going to come along and ruin all his great work which makes him angrier than ever and fills him with despair. Penny asks Sheldon what beverage he needs for that, but Leonard thinks for a moment and interjects by offering Sheldon a cup of hot with s. Sheldon snaps at him while agreeing wholeheartedly with the offering.

The next day, Kripke marches into Sheldon's office after waiting an hour and a half in his own office, to which they had agreed upon. Sheldon replies that he prefers to be on his home court in his "". Sheldon tells Kripke to give him his paper first so he doesn't publish Sheldon's work under his name. Kripke says that Sheldon could steal his and do the same thing. Sheldon quips that he doesn't want to be published in . They exchange and Kripke finds an envelope full of blank paper. Sheldon tells Kripke that it is still worth more than Kripke's research. He gives Kripke a second envelope. Kripke, however, suspects that Sheldon gave him another envelope of blank paper, and warns Sheldon that if he finds the second envelope is also filled with blank paper, that he will get very angry. Sheldon acknowledges the failed ruse, reaches into his desk, and gives Kripke a third envelope, this envelope actually containing his research paper.

In Howard's lab, Raj is playing with his action figure while speaking in a voice stereotypical of a tough African-American. Raj's actions are bothering Howard since the action figures they purchased were a big waste of money. Raj suggests that they could get better action figures with "three words":. Raj then gets caught up in the number of words in "3-D printer", mulling it over before finally settling on "One word, one number, one letter, and possibly a hyphen". Howard has always wanted a 3-D printer and admits that he could use it to make prototype parts out of plastic for his work. Anything that he can design on his computer, the 3-D printer can make. Raj mentions, besides, Howard worked hard to get a wife who makes a lot of money. Raj also wants to make and his dream house.

While Sheldon hangs out with Amy, Amy mentions that one of her tobacco-addicted monkeys has taken up smoking a pipe. She is reluctant to dissect that monkey's brain since that monkey now reminds her of her uncle. Sheldon is upset because discovered by reading Kripke's paper that Kripke's work was leaps and bounds more advanced than his. He continues his lament by telling Amy that the Mommy of the best physicist at the university is not his Mommy, but that it is Kripke's Mommy. Sheldon starts to cry and Amy offers him a consoling hug. Sheldon says that he has nothing to lose and allows Amy to proceed. She hugs him and asks Sheldon how that feels. Sheldon replies that it feels like a is strangling him. Amy lets go and looks dejected. However Sheldon asks her why she stopped, to which Amy resumes hugging Sheldon to console him.

The next day, Sheldon tells Leonard that he can't go to work due to being sick. Leonard tells Sheldon that he is only pretending to be sick in an attempt to avoid going to work. Sheldon offers Leonard a thermometer of his temperature as proof that he is ill. Leonard, however, reads the thermometer which is displaying 128 degrees Fahrenheit. Leonard replies that Sheldon must have warmed the thermometer in his hot tea. Having his trick exposed, a despondent Sheldon feels that even Leonard is now smarter than him. Leonard tells Sheldon that his research just went down the wrong path, something that even happened to Albert Einstein. Sheldon still refuses to go to work, at which Leonard finally gets exasperated and yells at him, "Sheldon Lee Cooper, I do not have time for this nonsense. Now go put your clothes on, get in the car, and let's go to work." Sheldon quietly agrees and calls him a grouch as he sheepishly heads down the hallway so that he can get ready to go to work. Since he got Sheldon to do what he wanted (a rare accomplishment), Leonard tries to remember the manner he used that got Sheldon to comply, for future use.

Raj and Howard are admiring their new 3-D printer to which Howard remarks that they are taking jobs away from China and returning manufacturing to the United States. Raj looks at the 3-D printer and says that the 3-D printer was made in China. After only three hours, they succeed in making a worth twenty-five cents. Howard has Raj make a superhero pose so that he can scan him into the computer. He tells Raj that it isn't necessary for him (Raj) to suck in his stomach while making his superhero pose, since Howard can simply use his computer program to edit Raj's action figure to have great abs.

Kripke enters Sheldon's office and notes that Sheldon's paper is inferior. Sheldon tells Kripke to go ahead and mock him. Kripke says that they both know what his problem is, that Sheldon has a girlfriend and is distracted by having sex all the time. Sheldon thinks a moment and then agrees with him. He tries to explain that his work is suffering because of "all the laid" he is getting. Kripke says that if they are going to work together, Sheldon is going to have to buckle down. Sheldon plays along with Kripke's (incorrect) postulation that Sheldon having frequent sex with Amy is the cause of his poor scientific work, saying that Amy loves his genitals and that bumping their bathing suit parts together is magic.

Howard shows Bernadette his new action figure and an action figure he made of her. She gets very excited about them and wonders how there could be a Howard even smaller than her real one. She asks Howard how much the two action figures cost, and Howard answers that it didn't cost anything; he made the action figures with a used 3-D printer that he and Raj bought for $5000. Bernadette gets upset because she thinks that is too expensive, and that he didn't talk to her before spending that amount of money. Howard tells her that when she is sick, that he takes care of her, and that when she makes money, that he gets to buy stuff, and that's how love works. Bernadette counters that if he doesn't return the machine that he can make a set of lady parts with the 3-D printer and sleep with them. Howard thinks about it for a moment, which also upsets Bernadette.

While having dinner with Leonard and Sheldon, Penny asks Sheldon why he didn't just tell Kripke the truth. Sheldon replies that the ridiculous boldfaced lie made him look better. Sheldon then requests to Leonard that should Kripke ask Leonard about Sheldon's sex life, to respond that Sheldon's coitus with Amy is frequent, intense and whimsically inventive. Leonard asks Penny whether their sex life is like that, and Penny quips that is exactly what she writes ("For a whimsical, inventive time, call Leonard Hofstadter") on the bathroom walls. Then Penny asks Sheldon whether he is ever going to sleep with Amy. She tells him that they (Sheldon and Amy) have been going out a long time and Amy clearly wants that type of relationship. So she asks him directly what he is doing. Sheldon admits that he is quite fond of Amy and that he has always had problems with the kind of phyiscal contact that comes easily for other people. However, he has begun workng on it, and mentions recently putting on Amy which a year ago would have been unthinkable. Penny asks whether it is possible that someday he and Amy could get phyiscal. Sheldon replies that it is a possiblity. This admission stuns Penny to the point of slapping Leonard several times and mouthing "Oh my God!" She also thanks Sheldon for opening up, knowing how difficult that is for him.

At the university cafeteria, Raj is seen writing Howard a check to purchase Howard's half of the 3-D printer. Howard instructs Raj to make the check in Bernadette's name, since Bernadette took Howard off their joint checking account until he learns the value of money. Howard is shown not eating lunch, having used up his lunch allowance on .

Sheldon and Kripke are working together in Sheldon's office, and Kripke wants details on Sheldon's previous night with Amy. Kripke asked whether he gave it to her good, and Sheldon replied that he gave it to her well (correcting Kripke's grammatical error). Kripke also wanted to know if they use any (sex) toys. Confused, Sheldon replies that he has a next to his bed which really cracks up Kripke, to which he happily exclaims, "You are a fweak!" at Sheldon.

Reception
Oliver Sava of the  gave the episode an A-. Jesse Scheeden of   gave the episode a good rating: 7.3/10. Dhruv Rao of the The DR Club gave the episode a B+.

Trivia

 * Sheldon and Kripke are revealed to be working on a grant proposal for a new.
 * Leonard consoles Sheldon, "You just got stuck on a wrong path. It happened to &mdash; he got stuck on the  for decades." Sheldon retorts, "Oh, don't play the Einstein card! His great breakthroughs happened when no one knew anything. Everything was a great breakthrough." Sheldon referenced unified field theory in the Season 4 episodes The Cruciferous Vegetable Amplification and The Wildebeest Implementation. In the former, Sheldon told Leonard, "I’m going to miss so much ... the unified field theory, cold fusion, the dogapus." In the latter, Sheldon addressed Leonard again, "Yes, and he [Einstein] never unified gravity with the other forces. If he hadn't been such a hound dog, we'd all have time machines."
 * In addition to the music, the allusion to Star Wars is even more pronounced by the that Sheldon wears over his head, which resembles the hooded cloak worn by the Jedi hero Anakin Skywalker in Star Wars Episode III: Revenge of the Sith, after he is seduced by the dark side of the Force to become the Emperor's new apprentice – Darth Vader.
 * The is a "1200 XT 3-D Modeler Pro Series". The "XT" only appears on the front of the machine and the, presumably, company logo (what appears to be a stylized split "S" over a globe) only appears on the side.
 * The image scanner Howard uses to scan Raj for his action figure appears to be a.
 * Sheldon calls his office the Thunderdome, a reference to an arena for steel-cage jousting in the post-apocalyptic film, Mad Max Beyond Thunderdome (1985).