Josh "Kos" Koscheck went from training for the Olympics in freestyle wrestling to being featured on Spike TV's "The Ultimate Fighter" and now fights full-time for the UFC in the welterweight division.

"Six-feet of Sunshine," Kerri Walsh is on her way to becoming the best female beach volleyball player of all time (along with her partner Misty) after only playing professionally for seven years. Kerri is a two-time AVP MVP (2003, 2004) and part of the Tour's Team of the Year for the past five seasons.

Jamie Eason, known as the World's Fittest Model, shares her knowledge about fitness, nutrition and working out.

Mike "Quick" Swick is a mixed martial artist with an impressive record and a lot of charm. When he's not fighting, training, or teaching seminars, he's traveling the world and updating fans on his blog.

Forrest Griffin is a champion mixed martial artist. His victory during the first season of Spike TV's "The Ultimate Fighter" helped bring the then-fledgling sport into the mainstream.

Grayson "The Professor" Boucher is one of the most popular players on the highly stylized, international AND 1 Mixtape Tour, and is arguably the most popular streetball player ever.

For two years, Chuck "The Iceman" Liddell reigned as the UFC light heavyweight champion. The sport's first breakout star, he is considered the face of Mixed Martial Arts to millions of fans worldwide.