After bombing out in multi-million-dollar action flicks like The Chronicles of Riddick (more than $150 million to make and market and just over $50 million in ticket sales), Vin Diesel continues his transformation into this generation's Sylvester Stallone. In this silly family comedy, Diesel plays a tough Navy S.E.A.L. super-soldier who's been assigned to go undercover as a nanny to protect the five kids of a recently deceased government scientist. This was funny when it was called Mr. Nanny and starred Hulk Hogan. ... No, wait. It wasn't funny then either.91 minutes PG.