The Big Bang Theory first appeared on television screens all the way back in 2007. Over twelve fun and educational seasons, we got to know most of the characters pretty well. We know that nobody sits in Sheldon's spot. We know that Penny ignores her check engine light. We know that Leonard is obsessed with Penny. We know that Howard doesn't have a PhD. And we know that Raj struggles to talk to women.
It's almost crazy to think that these five individuals formed one of the greatest, and yes unusual, friendship groups in the history of television. For nearly three whole seasons, it was just Penny, Sheldon, Leonard, Howard and Raj and some would say, this was when The Big Bang Theory was at its best. Would you agree?
All five characters appeared in the very first episode of The Big Bang Theory, but just how much do you actually remember about that episode?
Only a true Big Bang Theory fan will be able to score 100% on this quiz.
Answers at the end!