From cosmologist Stephen Hawking to father of computer science Alan Turing, British heartthrob Benedict Cumberbatch has played quite a few geniuses on both the big and small screen. We have no idea if in real life the actor is really the sharpest knife in the drawer, but he comes off as a truly brainy guy: He talks a lot at an incredibly fast speed, likes to use big words in interviews, and recently he has fallen into the habit of wearing a pair of glasses that give him a sexy geek look.