Not much goes right for Artie Decker (Billy Crystal) during a visit to baby-sit his grandkids in Parental Guidance. That's not just the story, either: The movie itself is plagued by creaky, bad misfires and a missed opportunity to mine some decent comedy out of Crystal and on-screen wife Bette Midler. No, you don't expect Comedy of the Year out of a pair of actors now completely satisfied and in their 60s, but Crystal and Midler certainly have more left to offer than this beached whale of a generation gap comedy. Have they learned nothing from the recently resurgent Woody Allen? Parental Guidance is one of those saccharine family feel-goods that's supposed to have a little more traction because of the names involved. Ironically, it wouldn't feel nearly this bad if you didn't recognize the stars, who are capable of far better.