1 of 11 Richard Cartwright/ABC via Getty Images
For Him: Momentum. Fresh off The Bachelor, he's as talked-about as ever.
Against Him: If his stiff slow-dancing to "On the Wings of Love" on The Bachelor: After the Final Rose is any indication, he has a long road ahead of him.
2 of 11 Marc Andrew Deley/FilmMagic.com
For Him: Who doesn't love a hunky Brit?
Against Him: The former All My Children star is not exactly a household name.
3 of 11 Jeffrey Mayer/WireImage.com
For Her: She's got a dance background, having been a member of the Dazzlers, the basketball dance team at the University of Florida.
Against Her: Her day job requires standing.
4 of 11 Mark Wilson/Getty Images
For Him: He knows how to moonwalk...sort of.
Against Him: He's 80.
5 of 11 Arnold Turner/WireImage.com
For Her: She has charm and personality in spades.
Against Her: She's known for her sassy back-talk, and Len will not stand for that.
6 of 11 Chris Weeks/WireImage.com
For Her: She sings and dances for a living.
Against Her: The Pussycat Doll frontwoman could be a bigger ringer than Mya was.
7 of 11 Scott Halleran/Getty Images
For Him: The newly crowned Olympic champ knows how to perform under pressure.
Against Him: He's a figure skater, not an ice dancer. Nor does he have Kristi Yamaguchi's figure skating pairs experience.
8 of 11 Matt Stroshane/Getty Images
For Him: He's got some moves if you've seen any of his end zone celebrations.
Against Him: Those moves aren't that impressive.
9 of 11 Adam Larkey/ABC via Getty Images
For Her: We're dying to see how her hairstyle will evolve.
Against Her: Most of the public.
10 of 11 Gilbert Carrasquillo/FilmMagic.com
For Her: No one will be more comfortable in the show's signature skimpy outfits.
Against Her: Glamour girls don't have a great track record on Dancing.
11 of 11 Jason LaVeris/FilmMagic.com
For Her: '90s nostalgia.
Against Her: There seems to be a semifinal curse for Beverly Hills, 90210 alums. Ian Ziering and Jennie Garth both finished fourth.