This is brilliant.
Whether you watch it or not, The Big Bang Theory is everywhere.
It's about a girl who moves into an apartment across from two scientists (who are your stereotypical nerds) and how they live their daily lives.
However, the theme song is probably the most catchy part of it.
If you haven't heard it, here it is:
Now one of the stars of the show Kaley Cuoco, who plays Penny, was on Jimmy Fallon last night and was requested to sing it:
You would expect after 200 or so episodes that she would know it, but it's still a good effort!