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While most girls might jump at the chance to make out with any of the cute famous guys on this list (pending Chris Brown, of course), the harsh reality is that dating any one of these so-called "dreamboats" is a disaster waiting to happen. Don't agree with us? Let us know in the comments below. (And for guys, check out this list of girls you should avoid).

The Adorable Puppy -- Michael Cera

Sure, he's sarcastic, and shy, and awkward -- sort of like an adorable shaggy dog that you just want to cuddle and love forever. But who knows what evil lurks beneath that bumbling veneer? How long will it continue to be cute? And how can we ever forgive him for "Year One"?

The "Funny" Guy -- Dane Cook

In 1972, a team of elite scientists created a Frankenstein monster from all the worst parts of fraternity culture. Years later, their abomination grew to international fame by telling jokes about slapping women in the face with peanut butter. Guard your drinks when this guy's in the room.
The Stoner Philosopher -- Seth Rogen

Open-minded gals are crazy for this slightly chubby, bearded, brainy Jewish heartthrob. But think about what life would really be like with this stoner hero when he's sprawled out on the couch in his underwear, selling your CDs to buy weed and ruminating about how the female orgasm is a myth. When he tells you you're too good for him, he's right.
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The Surfer Broheim -- Jack Johnson

So mellow that he's nearly comatose, Jack Johnson is the wave-catching, guitar-strumming, tan god from Hawaii that even your college boyfriend secretly wanted to bone. But surfboard quickly becomes surf-bored. And do you really want to date a guy whose idea of a good time is "Bubble Toes"?
The Nerdy Perv -- Zach Braff

Braff made a romantic comedy in which he cast himself as Natalie Portman's love interest, despite the fact that he's an unappealing dork with elephant ears. Since then he's gained a reputation for smacking women's asses in public and riding very tiny motorscooters. Girls, you don't want no "Scrubs."

The Tortured Artist -- Brandon Flowers
Infatuated with this guyliner-wearing Mormon rock star? Think again. Any man whose idea of deep philosophical insight can be summed up by the distinction between "human" and "dancer" deserves to be eternally single. Keep your hands out of his magic underwear.
The Pretty Boy -- Robert Pattinson
We have nothing against vampires, or the British, but seriously -- this dude is just too damn pretty to be straight. Despite the jury being out on this pressing issue, we'd advise all heterosexual women to simply accept the inevitable.
The Outdoorsy Guy -- Todd Palin
For one dangerous second we were worried that this snow-machine-loving Alaskan was set to become First Dude. That's all over now, but we still advise you to stay away from Mr. Palin if he ever divorces the Barracuda. Stick with one of the guys from "Deadliest Catch" instead.
The Club Clown -- Moby
This bald, vegan, bespectacled techno star is a true talent -- plus he hangs out with David Lynch and occasionally snorts meth with Midwestern thugs, which is pretty badass. But the man who gave us "Play" is also a real player who seems allergic to monogamy. Our advice? Stick to his music, skip the broken heart.
The Total D-Bag -- Chris Brown
No explanation necessary.
(All photos: Getty Images)