Dancing with the Stars- Season Nine

Claim to Fame: Chuck is a MMA and Ultimate Fighting champ. He quickly became a popular fighter in the sport and was just recently inducted into the UFC Hall of Fame. Chuck has also appeared in movies and TV shows.

Chris Pizzello, AP

Claim to Fame: Aaron is a singer and actor. He has released four albums and has had many Top 40 hits. Aaron appeared in both 'Lizzie McGuire' and '7th Heaven.' He has also appeared on Broadway. Aaron is part of the Carter family including his older brother Nick from the Backstreet Boys.

Shea Walsh, AP

Claim to Fame: Ashley is a comedian, songwriter and actor. He has appeared in TV shows such as 'Sunset Beach' and 'Oz.' He has also written songs for artists like Hilary Duff and Sugar Ray. His dad, George Hamilton was on season two of 'Dancing with the Stars.'

Dan Steinberg, AP

Claim to Fame: Debi started her career as a make up artist for Madonna and appeared in several of her videos. From there Debi went on to appear in several movies including 'Goodfellas.' She now appears in the TV Show 'Entourage' and hosts a cooking show online with her husband.

Frazer Harrison, Getty Images

Claim to Fame: Donnie is one of the famous Osmond kids. He and his sister, Marie, became the youngest hosts of a variety show. Donnie is an actor and singer and has had both a solo career and been part of the Osmond group. You might also know him from the movie 'College Road Trip' with Raven. He and his sister are currently performing in Las Vegas. Marie was in season five of the show.

Louie Traub, AP

Claim to Fame: Joanna is a model and actor. She has worked on photo shoots around the world and has appeared in TV shows like 'Las Vegas' and 'CSI.'

Matt Sayles, AP

Claim to Fame: Kathy has done it all- modeling, acting, teaching, and running her own business. She has modeled all over the world for several magazines and has acted in several movies and TV shows. Kathy recently wrote a book for moms and was honored for her charity work.

Chris Pizzello, AP

Claim to Fame: Kelly is the daughter of rocker Ozzy and 'America's Got Talent' judge Sharon. We first got to know her on the reality TV show about her family. She then went on to release two CDs and now hosts her own radio show in the UK.

Dan Steinberg, AP

Claim to Fame: Louie is a professional snowboarder who has competed in many games including the Winter X Games. He is part of the US Olympic 2010 team and is one of the favored athletes.

Harry How, Getty Images

Claim to Fame: Macy Gray is a R&B singer and songwriter. She has released several albums that have sold millions of copies. She has been nominated for Grammys and MTV Video Music Awards. Macy's next album is due out later this year.

Phil McCarten, AP