Chuck Liddell: The Ultimate Fighting Championship member was dating singer Willa Ford when she competed in the show's third season.
Louie Vito: A professional snowboarder who has participated in the Winter X Games.
Natalie Coughlin: The swimmer earned six gold medals at the 2008 Olympics, making her the youngest female to earn that many at one game -- and breaking her 2004 record.
Michael Irvin: A former Dallas Cowboys wide receiver who was inducted into the Professional Football Hall of Fame in 2007.
Mya: A Grammy-winning R&B singer and former star of Broadway's Chicago.
Kelly Osbourne: The London-born daughter of Ozzy and Sharon Osbourne. She rose to prominence after starring in the family's reality show, The Osbournes.
Macy Gray: She won one Grammy and was nominated for four more. Best known for her tune "I Try" from her multi-platinum debut album, On How Life Is.
Debi Mazar: Stars on Entourage and has also appeared in four Madonna videos: "Papa Don't Preach," "True Blue," "Deeper and Deeper" and "Music."
Ashley Hamilton: The son of George Hamilton and Alana Stewart (and stepson of Rod Stewart), the actor was married to Shannen Doherty for just five months in 2003 to 2004.
Kathy Ireland: The former model (who appeared in Sports Illustrated for 13 consecutive years) now owns her own company, Kathy Ireland Worldwide, which generates an estimated $1.4 billion in sales a year.
Joanna Krupa: Maxim named her the sexiest swimsuit model in the world.
Aaron Carter: A pop singer (and little brother to the Backstreet Boys' Nick Carter) known for dating Lindsay Lohan and Hilary Duff.
Donny Osmond: The one-time teen idol used to perform with his brothers as a kid in the Osmond Brothers, and later just his sister, Marie Osmond.
Melissa Joan Hart: A mother of two boys, she is most known for starring in Sabrina the Teenage Witch from 1996 to 2003.
Tom DeLay: A former Republican House Majority Leader who resigned after being indicted on campaign finance violations.
Mark Dacascos: The chairman of Kitchen Stadium on Iron Chef America since 2005.
Mya' better do the damn thing and win! This could be her chance for a comeback!!!
