Special Guest Stars Peter MacNicol as John Cage Lisa Nicole Carson as Renee Radick Gil Bellows as Billy Thomas Courtney Thorne-Smith as Georgia Thomas Christina Ricci as Liza Bump Guest Stars Barry Humphries as Claire Otoms Bobby Cannavale as Wilson Jade Carl Reiner as Johnson Buck Jordan Baker as Marissa Jackson Co Starring Renée Elise Goldsberry as Singer Vatrena King as Singer Sy Smith as Singer Barry White as Himself Uncredited Lucy Liu as Ling Woo Robert Downey Jr. as Larry Paul Dyan Cannon as Whipper Cone James Marsden as Glenn Foy Jon Bon Jovi as Victor Morrison Julianne Nicholson as Jenny Shaw Steve Cohen as Dancing Twin #2 Eric Cohen as Dancing Twin #1 Barry Manilow as Himself Christopher D. Grace as Prom Date Nathan Todaro as Partygoer Ernesto Trinidad as Waiter at the Bar