That’s right: On Friday night, DJ Jazzy Jeff (the Fresh Prince sidekick) spun records at the Rose Center for Earth and Space (in the American Museum of Natural History). The set, part of a Flavorpill-organized new monthly series called "One Step Beyond," featured retro rock, R&B, and rap hits, and some Euro new wave, and was predictably hilarious. The young crowd, presumably composed of fans of The Fresh Prince of Bel-Air reruns, danced to everything from “Rapper’s Delight” to Kanye West’s “Flashing Lights.” And then there were the Retro Kids, an enthusiastic eight-man crew of Run D.M.C.–styled look-alikes sporting multicolored blazers and gravity-defying Afros, who did the running man in unison. Part rave, part 1992 bar mitzvah, the night could not have been better if Will Smith showed up. —Katie Goldsmith