1) Blackjack an American rapper. A hip-hop producer originally from East Palo Alto, CA. He started his career in the early 90's with a group by the same name Blackjack, but after the labels weren't interested in the group just the producer, everybody started calling him the "Blackjack" and he just went away with it and kept the name. 2) Blackjack was a band featuring Michael Bolton and Bruce Kulick. The drummer was Sandy Gennaro and the bass player was Jimmy Haslip.