The Time Machine is a device that allows the user to travel through time. Specifically this refers to the device written in 1895 about by H.G. Wells in his book of the same name. The device has appeared in many films, television shows, video games and other works. The time traveler travels to the year 802,701 finds the timid race of Eloi living above ground and the savage race of Morlocks living below.
In "The Nerdvana Annihilation", Leonard buys a model of the device used in the 1960 movie and finds the life-size time machine delivered which causes all kinds of problems with his friends.