By Emily Feimster Hollywood has seen its share of odd coupling - Drew Barrymore and Tom Green, Angelina Jolie and Billy Bob Thornton, Michael Jackson and Lisa Marie Presley - but now there's a new crop of love birds leaving us scratching our heads. What draws them together? Maybe they like the attention it brings or maybe they just prefer someone different. Who knows? All we can ask is - why!?!

This summer marked the union of America's sweetheart Sandra Bullock to America's tattooed bad boy Jesse James. The unlikely pair met when Bullock took her nephew to visit the set of James' show "Monster Garage." We're not sure how we didn't see this coming considering his ex-wife is a porn star and Bullock's ex is the "O.C.'s" Tate Donovan. Hmmm??? Now Tate's other ex, Jennifer Aniston, is reportedly hooking up with her co-star of "The Break Up," Vince Vaughn." Um, ok. According to the tabs, she's already got him on a diet and is helping him with his wardrobe. Well, not everyone can look like Brad Pitt. But Vince Vaughn? Come on Jennifer! It shouldn't be too surprising, though. After all, her best "Friend" Courteney Cox married the goofy David Arquette. Now there's a mystery!

Another shock came in September when the 43-year-old Demi Moore actually married her 27-year-old boyfriend Ashton Kutcher. Their coupling seemed like quite the publicity stunt in the beginning - a modern day Mrs. Robinson on the prowl - but it appears as if love has prevailed.

Speaking of publicity stunts, Katie Holmes is having Tom Cruise's baby! We certainly would have never pinned those two together. I mean, really, one minute she's crying over her breakup with "American Pie" actor Chris Klein, the next minute she's eating sushi on Cruise's private plane. Smells a little fishy to us or is that just the sushi?

There are, of course, a lot of famous men running around with much younger women in Hollywood - where such inter-generational fraternization has been a way of life since Hollywood began. Harrison Ford is one of the greatest action heroes of all time. Calista Flockhart is the poster child for an uncommonly low body mass index. Yet, despite 22 years (and a whole lot of weight), they're happily engaged. Flockhart certainly had her eye on the prize, though, when she met Ford at the 2002 Golden Globe Awards and strategically spilled her drink on him in order to strike up a conversation. So she can do all that work to get a man, yet somehow she still forgets to eat?!?

Michael Douglas and Catherine Zeta-Jones were introduced at a dinner hosted by Zeta-Jones' "The Mask of Zorro" co-star Antonio Banderas. Did we mention that Douglas is 25 years older? That means when he was 30, she was ?. ok, now that's just gross! And let's not forget singer Celine Dion. She first met her manager/husband, Ren? Angelil, when she was 12 and he was 38. Hey, nothing creepy about that! The happy pair then popped out a child in 2001 after Dion underwent in vitro fertilization.

However, our creepiest of creepy coupling goes to neurotic director Woody Allen, who met his wife Soon-Yi when she was eight years old. Allen's lover at the time, Mia Farrow, had adopted Soon-Yi during a trip to Korea, but all came crashing down years later when Farrow discovered nude pictures of her adopted daughter in Allen's apartment. While marriages like this usually only work out in West Virginia, so far this union has stood the test of time and has produced two children.

Of course, when talking about odd pairs, you can't forget the "how the hecks?" First off, how in the heck did the gaunt, shaggy Black Crowes frontman Chris Robinson get the unbelievably gorgeous Kate Hudson? And, yes, Ellen DeGeneres is one of the funniest women on the planet but her girlfriend, Portia de Rossi, is smoking! When it comes to the singer Seal, no one doubts his musicianship, but Heidi Klum? He snagged Heidi Klum! Does anyone else think that's odd? Anyone? Hello? Well, we guess it's true after all - beauty really is in the eye of the beholder.