Picks and Pans Review: Now Playing

By Leah Rozen, MICHELLE TAN, ANDRA CHANTIM

UPDATED 08/31/2009 at 01:00 AM EDT • Originally published 08/31/2009 at 01:00 AM EDT

>SHORTS Director-writer Robert Rodriguez (Spy Kids) stumbles with a not especially funny, special-effects-heavy comedy about kids who find a magic rock. (PG)

    

WORLD'S GREATEST DAD Robin Williams (below), an effective actor when not trying too hard, shines as a would-be writer in an acrid dark comedy. (R)

    

MY ONE AND ONLY In an agreeable comedy inspired by George Hamilton's real-life youth, a fading southern belle (Renée Zellweger, below) travels cross-country with two teenage sons. (PG-13)