Just what we need: another cheap action film to exploit the sudden popularity of mixed martial arts. ... Wait as second. Was that David Mamet's name on the credits? Redbelt is, to say the least, an unusual film to see written and directed by the man who gave us Glengarry Glen Ross, Vanya on 42nd Street and American Buffalo. Award-winning British actor Chiwitel Ejiofor (Dirty Pretty Things) headlines as a painfully noble instructor of Brazilian Jiu-Jitsu forced into a big-money tournament to make ends meet. With this twisty, ultra-literate version of Rocky, Mamet may actually have succeeded in making an action film that's too smart for its own good.99 minutes R.