A gifted young breakdancer (Jamie Kennedy) cracks his head during a competition and goes into a 20-year coma; after coming to, he has to catch up with the times and reclaim his former sweetheart (Maria Menounos) from her scuzzball fiance (Michael Rosenbaum). Joining forces with his old pals (Miguel A. Nunez Jr., Bobby Lee, Aris Alvarado), he enters another competition. About eight minutes of this comedy is devoted to some terrific breakdancing; the rest consists of wall-to-wall product placement and politically incorrect bad-taste comedy (a homeless geezer pissing on himself and others, the hero vomiting Mexican food on another dancer). PG-13, 108 min. (JR)