John Cassese, the Dance Doctor

New York-native John Cassese's motto is, "If you can walk, you can dance." The celebrity dance instructor and choreographer's own quick-stepping career began at the tender age of 10, jumpstarting a passion that would eventually take him careening across the stages of off-Broadway productions, nightclubs, dance competitions, and the occasional monster-truck rally. It wasn't until he relocated to Los Angeles that an agent dubbed him "The Dance Doctor," and soon after, he found his fleet-footed prowess and teaching abilities in high demand amongst production studios such as Sony, Paramount, and 20th Century Fox.

Between choreographing a Charleston dance sequence on AMC's Mad Men and singing at the 50th birthday parties of Billy Crystal and Wolfgang Puck, John leads a team of instructors as they teach celebs and everyday Tinseltowners the finer points of styles ranging from ballet to hip-hop. Despite all the fanfare, his biggest praise comes from his work with soon-to-be-married couples, who seek his advice on everything from basic steps and song selection, to the length of the post-cake-cutting conga line.