It's a freaking all-star team of athletes plugging the new Guitar Hero video game. Swimmer Michael Phelps, slugger (and Madonna toy) Alex Rodriguez, skater Tony Hawk and baller Kobe Bryant slide out in their skivvies and dance around to Bob Seger's "Old Time Rock and Roll" a la Tom Cruise in Risky Business. Highlight: a helmeted Tony Hawk rolls out on a skateboard, toy drum set hanging awkwardly from his torso. Lowlight: Michael Phelps, who proves to be as camera-allergic as ever. (Stay in the water, Phelps!) Sadly, a steamy Heidi Klum version of this spot she rocks out in black lingerie never made it onto television.