The "21 Jump Street" film redux has been in the works for some time, but ever since Johnny Depp mentioned interest in a cameo last week, we have a hunch it's been put on the fast track. Sure, he just wants a cameo, but 90 seconds of screen time with Johnny will surely guarantee 90 mil. So, to help out those frantic studio execs, we have a few humble suggestions for the cast of the movie. Don't bother to thank us. A mere Prolific Fantasy Casting Director credit will do.