Four Christmases

Parents need to know that this romantic comedy is riddled with gags centering on major family dysfunction. And there's real bite underneath the laughs: The central couple (played by teen favorites Reese Witherspoon and Vince Vaughn) finds out soon enough that they don't really know enough about each other, and their families beat them up -- both physically and emotionally. It's all played for laughs, of course, which takes some of the edge off, but younger kids may still wind up perturbed by the scenes of familial mayhem. There's also some swearing (including "s--t") and social drinking, as well as some innuendo and implied sex.