Dwayne The Rock Johnson actually shows off some fairly decent acting chops in Gridiron Gang, a cliché-ridden, almost inspiring but ultimately shallow entry into the high school football-movie genre. Despite good intentionsits based on some real-life eventsthis one aint no Friday Night Lights. Johnson plays Sean Porter, a counselor at a youth prison filled with gang members, thieves and a couple of killers to boot. The kids, not surprisingly, are at each other's throats within the confines of their small barracks, so Porter hatches a plan to get them out into fresh air to play some football. The movie works for a bit, but eventually gets bogged down by a sappy script. By the time Johnson shows up in football gear to teach one of his kids a lesson, the film has lost all credibility.