Wil Wheaton plays a fictionalized version of himself. Wil played Wesley Crusher in Star Trek: The Next Generation, a character that Sheldon idolized as a child. In 1995, Wheaton made Sheldon's "mortal enemy" list after the former failed to show up at a fan convention as advertised. Sheldon took a 10-hour bus ride to attend the convention, while breaking his own personal rule of using the facilities on board the bus, and was disappointed that Wheaton was a no-show.