11 Geeky Facts About The Big Bang Theory You Didn't Know

7. The Cast Can Actually Play Their Characters' Instruments

TBBT's characters are a musical bunch. Sheldon plays the noisy theremin, much to the derision of his long-suffering friends; Leonard plays cello, having been encouraged to take it up by his parents because 'naming me Leonard and putting me in advanced placement classes wasn't getting me beaten up enough'; whilst Amy sports a harp, on which her repertoire includes the Diff'rent Strokes theme song. But the actors are not miming. Jim Parsons, Johnny Galecki and Mayim Bialik can all genuinely play their character's respective instruments. Galecki has been a cellist from a young age, whilst the others learned theirs purely for the show. With an instrument like the theremin, we can't imagine that Parsons' neighbours were too happy!