For 279 episodes of The Big Bang Theory we got to hang out with Sheldon, Leonard, Penny and the rest of the gang.
We saw a gang of lovable scientists make accomplishments, fall in love and learn a thing or two from Penny.
Sheldon broadened his horizons and embarked on a physical relationship with Amy. Howard took his engineering career to new heights when he went to the International Space Station. Leonard and Penny put aside their fears and settled down together. Raj even managed to overcome his selective mutism and was able to speak to women without getting drunk.
Yet it wasn't just the main cast of characters who made The Big Bang Theory so great. Each episode of the show featured great stars and other characters. We got to know Sheldon's mother, their friends and former Star Trek cast members.
This quiz features 12 characters from The Big Bang Theory and all you have to do is work out how many of the 279 episodes of the show they appeared in.
Will you prove yourself the ultimate fan of The Big Bang Theory with this character quiz? Let's find out!
Don't forget, all the answers can be found at the end of the quiz. Good luck!