The Big Bang Theory: 21 Easter Eggs You Probably Missed

This easter egg comes during one of the best moments of the early seasons, when Sheldon gets drunk at a science awards ceremony to combat his nerves but ends up ripping his trousers off, something he only learned after it went viral on YouTube.

Briefly, the audience catch a glimpse of his username: OB1, a clear reference to his Star Wars hero Obi Wan Kenobi. Other shots of Sheldon's laptop in various episodes show a folder containing a physics computer game he mentions frequently throughout the show. It's all in the details.