Don't expect any surprises from this lightweight drama with a heavyweight cast: The most impressive thing about it is that the actors manage to sound so earnest while mouthing the most shameless cliches imaginable. Workaholic lawyer Luke Harrison (Ed
Harris) has just moved his glamorous photographer girlfriend Isabel (Julia Roberts) into his fabulous loft. The only problem: ex-wife Jackie, an earthy and devoted mom based in the Hudson Valley, who takes issue with Isabel's parenting chops. Jackie and the kids -- bratty preteen Anna (Jena
Malone), and cute-as-a-button Ben (Liam Aiken) -- resent Isabel's bumbling intrusion into their lives. But as weekend stepmothers ...