Masand's Verdict: Be Kind Rewind, an average comedy

Be Kind Rewind is one of those films that's got a terrific idea at its core. But sadly, it has nothing more. After a failed attempt at breaking into a power plant — don't even ask why — Jack Black gets heavily magnetized and ends up erasing every single videotape that's lying on the racks at the video-store his friend Mos Def works at.