6 Facts You Didn't Know About 'The Big Bang Theory'
1 Of 6 Romance At The Work Place
Kaley Cuoc and Johnny Galecki actually dated for two years while they were costars. Their characters, Penny and Leonard also dated on the show. They kept the relationship absolutely private but eventually ended things, Kaley Cuoco said, "I don't want to be hiding. We couldn't do anything. It wasn't as fun as we wanted it to be."
2 Of 6 Making Things More Realistic
Mayim Bialik who plays Amy on the show learned to play the harp because it is Amy's instrument of choice. Jim Parson's also learned how to play the theremin (A theremin is an early electronic musical instrument) for his character, Sheldon.