Def Jam Records celebrated its 25th Anniversary 6/11/09 with yet another exclusive hip-hop event, this time taking place at Sneakerbox in Brooklyn, NY. Hot 97's Heavy Hitter DJ Enuff was on the 1s and 2s for the entire night, while two of Def Jam's most promising up-and-coming emcees -- Big Sean and Lil Ru -- performed on the stage.