1. Mel Gibson
Anti-Semitic rants are so 2006. Now, Mel's onto bigger and better stunts like calling his girlfriend a "bitch, c--t, whore, gold digger"—with a side of alleged domestic violence.
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2. Chris Brown
He and Rihanna were a dynamic duo—until Chris physically assaulted her on Grammy night. The unapologetic attacker initially pleaded not guilty (before finally copping to a felony charge), and started taking a RiRi look-a-like out on the town. All while his battered ex's black eye was still healing. Talk about disturbia.
3. John Mayer
He can make girls swoon at the flick of a guitar pick, but this heartbreaker kisses and tells. Just ask exes, Jessica Simpson and Jennifer Aniston! Or just ask anyone, really, because the guy told everyone everything.
4. Raffaello Follieri
Poor Anne Hathaway's ex isn't even an ex-con yet—he's still got two years to serve for the so-called Vati-con scam. Good thing her latest beau's not such a bum.
5. George Clooney
The ultimate uncatchable catch. Forget what you may have heard about his faux-Italian wedding, this 49-year-old bachelor doesn't look like he'll be anyone's hubby any time soon. And that's the problem. Right, ladies?
6. Jon Gosselin
Ever since he traded in the Kate + 8 for a new GF and a new wardrobe, J.Goss has become the definition of douche. We get that you've moved on, Jon, but replacing your wife and family with another Kate, and a Hailey, and an Ellen is just not cool. And neither is that mohawk.
7. Scott Disick
He may dress (and act, as Khloé would say) like the dapper Christian Bale in American Psycho, but one thing's for sure: Kourtney's baby daddy is anything but a peachy beau. And admiting that he has "issues" doesn't exactly make them go away.
8. Wilmer Valderrama
Fez couldn't get the girl on That 70s show, but off-set he has no problem—or so he says. Wilmer recently opened up his bedroom black book to Howard Stern, naming starlets he's seduced—Lindsay Lohan, Ashlee Simpson, Jennifer Love Hewitt—and bragging about conquering Mandy Moore's virginity and his "blessed" assets. Looks like we should add Wil to John Mayer's dog house.
9. Robert Pattinson
Isn't it time for R.Pattz to be more upfront about his love for K.Stew—if he is, in fact, her BF? Despite awkward VMA kisses, plenty of rumors and the feverish support of pro-Robsten Twi-hards, the guy still won't play the part in public. Maybe that's the couple's "strategy," but we say stand up and act like a man. Or, at least, a boyfriend.
10. You Tell Us!
Who'd we miss? Drop a line in the comments to tell us which bad BF should be added to the batch!
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Top 9 Heartbreaking Hollywood Breakups