A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.
Sheldon frequently wears t-shirts with the characters or symbols of the Green Lantern, the Flash, or the old television show The Greatest American Hero (1981). The shirts from the "Green Lantern" comic book series are various colors with a corresponding symbol, with each color ... ...
Sheldon:
You're not done with her, are you?
Leonard Hofstadter:
Our babies are gonna be smart and beautiful.
Sheldon:
Not to mention imaginary.
In one of the episodes when Sheldon moves in with Raj, Raj is watching an Indian movie. The actress of that movie is referred to as Aishwarya Rai Bachchan, but it's actually Amisha Patel.
One of the final cards to appear in the credit sequence is the vanity card for Chuck Lorre Productions. In keeping with his practice on "Dharma and Greg" and "Two and a Half Men", there is a different message on the card each week, written by Chuck Lorre himself.
English, Hindi, Italian, Russian, Mandarin, Klingon