The Cooper-Hofstadter Polarization

Summary
Sheldon and Leonard are invited to present their paper on Super Solids to a physics conference but Sheldon doesn’t want to. Leonard does and they fall out over it. When Leonard goes without him Sheldon shows up and starts a fight.

Critics
"The show is so close to breaking out from the pack and becoming an excellent character comedy but the writers are missing the point. In the last few episodes in particular they have set up well written plots which fall away rather than making a point. The producers of the show worked for long stretches on Two and a Half Men, a show more concerned with punch lines than characters. I hope that the producers chose to develop the show in a different direction because it can be so much more than it is." - The TV Critic's Review