It’s a celebration, bitches! Check out the hot new video for Jay-Z’s second single off American Gangster called “Roc Boys (And The Winner Is)…” The Chris Robinson directed video features cameos from Mariah Carey, Cassie, Nas, Diddy, Memphis Bleek, Rick Ross, Swizz Beatz, DJ Clue, Beanie Sigel, Freeway, Jadakiss, Irv Gotti, and more.