1 of 12
Daniel Faraday on Lost
We may never entirely understand the physics behind Faraday's time travel shenanigans in Lost. But we entirely understand why the producers signed up the believably professorial yet intriguingly intense Davies to play him.
Looking for the ladies? See 12 Brainy TV/Movie Beauties
2 of 12
Sheldon Cooper on The Big Bang Theory
The hilarious, Emmy-nominated Parsons plays the kind of uber-nerd you want to take out for an evening of hedonistic, Star Trek-free fun just for the sheer challenge. Although he'd probably convince you to stay in for a game of ''Rock, paper, scissors, lizard, Spock.''
3 of 12
Leonard Leakey Hofstadter on The Big Bang Theory
Bespectacled prodigy Leonard is basically the male version of the sexy librarian. And the more he fails, heartbreakingly, with women the hotter he gets. Which means that he has become very hot indeed.
4 of 12
Chuck Bartowski on Chuck
The only real problem with Chuck is that Levi is way too good-looking for the role of the show's titular computer nerd. But, hey, it's the kind of problem we can live with....
5 of 12
Max Tyler on Greek
We always kinda knew that Max wasn't the right guy for Casey (Is it Cappie? Or Evan?) but that didn't stop us from swooning even when this nerd spouted off engineering gibberish.
6 of 12
Alec Hardison on Leverage
No pocket protector or taped glasses for this computer geek, thank you very much. As the resident high-tech spyware expert for Leverage's merry band of modern-day Robin Hoods, Hodge proves that IT guys and AV-club members can be sex symbols, too.
7 of 12
CLIFTON COLLINS, JR.
Winston in Sunshine Cleaning
He's a one-armed, ponytailed loner who wears horn-rimmed glasses, builds model airplanes, and knows all the laws and vagaries pertaining to the gory crime-scene sanitizing business. And yet, with his dreamy eyes and his fatherly affection for Oscar, the eccentric son of Amy Adams' central character, Collins' Winston becomes the gooey romantic center of this spring's hit indie dramedy.
8 of 12
Burton Guster on Psych
Meticulous, scrupulous, and always ready with a slightly derisive zinger, Hill's Gus is an ideal sidekick. If only all business partnerships looked this good.
9 of 12
Greg on CSI
Oh, Greg, step away from the microscope and into my arms. He may be a CSI Level 3 now, but he'll always be that sexy lab rat to us.
10 of 12
Ted Mosby on How I Met Your Mother
Ted Mosby, architect. When he's not boring you with details about the Empire State Building or obsessing over Star Wars minutiae, he's probably being a supremely stand-up bro...or falling into love with one wrong girl after another. Passion, playfulness, and adorably messy hair — remind us again why Ted's having such a hard time finding the woman of his dreams?
11 of 12
Daniel Dreiberg in Watchmen
Whooooo knew a owl-themed superhero costume could do such wonders for a man? Dan Dreiberg, that's who. Well, him and Laurie Juspeczyk....
12 of 12
The Doctor in Doctor Who
Is it too lame to make a ''playing doctor'' joke? It is? Fine. We'll just stick with ''the Doctor is in...our dreams.''
Looking for the ladies? Click here to see 11 Brainy TV/Movie Beauties