Chaos ensues at the luxury hotel where the junket is scheduled, and America's Sweethearts pokes easy fun at the cynical machinery that keeps Hollywood running. Quotable quips are delivered in abundance, and while Zeta-Jones is readily convincing as a bitchy narcissist, Roberts effortlessly steals the show with her trademark charms. All of which makes America's Sweethearts lightly entertaining, even though it never rises (like Roberts's earlier Notting Hill) to the level of classic romantic comedy, hampered by a script that too often substitutes easy laughs for ripe satirical invention, flashing a phony grin when it should be baring its fangs. --Jeff Shannon