How You Know Her: The 16-year-old actress, singer and dancer currently stars as Rocky Blue on Disney Channel sitcom Shake It Up. Partner: Val Chmerkovskiy Click here for Dancing executive producer Conrad Green's thoughts on building this season's cast

How You Know Him: The 47-year-old comedian and actor has starred on such shows as The Ben Stiller Show, NBC's Newsradio and ABC's Less Than Perfect. He's also frequently appeared as a guest on Comedy Central's roasts. Partner: Sharna Burgess (former troupe member)

How You Know Her: The 56-year-old figure skater won gold at the 1976 Olympics in Innsbruck, Austria. She also won the World Championships in the same year. Partner: Tristan McManus

How You Know Him: The 49-year-old comedian and actor was the star of the ABC/UPN sitcom The Hughleys. Besides being featured in the film The Original Kings of Comedy, he has also appeared on Studio 60 on the Sunset Strip and briefly hosted CNN's D.L. Hughley Breaks the News. Partner: Cheryl Burke

How You Know Him: The 28-year-old professional football player just won a Super Bowl ring as a wide receiver for the Baltimore Ravens. Partner: Karina Smirnoff

How You Know Her: The 48-year-old country music singer is best known as one half of the multiple Grammy-winning duo The Judds with her mother Naomi. Although she also had multi-platinum success as a solo artist, The Judds completed a farewell tour in 2010 and were featured on an OWN reality series called The Judds. Partner: Tony Dovolani

How You Know Him: The 26-year-old boxer is a former WBC Welterweight Champion. He boasts a professional record of 29-4-2, with 22 knockouts. Partner: Lindsay Arnold (new pro)

How You Know Her: The 26-year-old country music singer rose to fame as a finalist on the fifth season of American Idol. She's since released three albums, which have collectively sold more than 1 million copies in the U.S. Partner: Derek Hough

How You Know Her: The 18-year-old gymnast was the captain of the U.S. Women's Gymnastics team, which won gold in team competition at the 2012 London games and the 2011 World Championships. Raisman also won an individual gold medal for floor exercise and a bronze on the balance beam in London. Partner: Mark Ballas

How You Know Him: The 41-year old German-born actor has played Jasper Jax on General Hospital since the character was introduced in 1996. He also recently appeared on the big screen in Alex Cross. Partner: Kym Johnson

How You Know Her: The 52-year-old reality star is an original cast member of Bravo's The Real Housewives of Beverly Hills. This year, she also appeared on Vanderpump Rules, a spin-off which follows the lives of her employees at SUR, the West Hollywood restaurant owned by her and her husband Ken. Partner: Gleb Savchenko (new pro)