For '80s kids, "21 Jump Street" was a Fox drama about adult cops with very good genes who went back to high school undercover to stop crimes and maybe impart a life lesson or two. During its 1987-1991 lifespan, the series was fun eye candy that made its lead into a Hollywood It boy (and eventual superstar) and had enough fans to survive network cancellation and continue in first-run syndication. Now, over two decades later, a new generation will find a place where you don't need permission to decide what you believe (as the show's theme song put it) thanks to a much buzzed-about big-screen remake starring Jonah Hill and Channing Tatum. But whatever happened to the original cast? We jumped at the chance to find out.