In The Big Bang Theory, which apartment do Leonard and Sheldon share at the start?

In The Big Bang Theory, who lives across the hall from Leonard and Sheldon in Season 1?

In The Big Bang Theory, which degree does Howard repeatedly brag about despite the others’ doctorates?

In The Big Bang Theory, what lullaby comforts Sheldon when he’s sick?

In The Big Bang Theory, which field is Amy Farrah Fowler’s specialty?

In The Big Bang Theory, who owns the comic book store the gang frequents?

In The Big Bang Theory, which famous scientist first guest-stars and roasts Sheldon’s paper?

In The Big Bang Theory, what broken apartment item becomes a long-running mystery origin story?

In The Big Bang Theory, which language do Sheldon and Leonard use for a themed game of Boggle?

In The Big Bang Theory, Raj’s early social anxiety is specifically about what?