The whole cast of characters in The Big Bang Theory is filled with academically gifted people, but who's actually the smartest of the group? Is it Sheldon Cooper because of his incredible memory for all the tiniest details of nerd-dom? Raj because his specialty, astrophysics, is definitely the hardest science? Or maybe you think it's Penny because street smarts are more important to you than book smarts.
Let us know with your votes, and for more lists about the cast of The Big Bang Theory, be sure to also check out The Best Big Bang Theory Memes and Super Smart Big Bang Theory Jokes You Totally Missed.