Be Kind Rewind: 3 out of 10.
I strongly discourage you all from giving Be Kind Rewind a shot. The premise may intrigue you, and the presence of Jack Black may cause you to believe it can't be all that bad, but I assure you... it is.
I honestly couldn't get through it, and it's pretty rare that I shut down a flick mid-stream. It's almost as if Jack Black, Mos Def and Danny Glover were making it up as they went along. It's one of the least funny comedies I've ever had the displeasure of watching.
What a mess. Avoid at all costs. This is not a drill.