In director James Mangold's pleasant excuse for a summer blockbuster, Tom Cruise does his best Tom Cruise impression as a superspy apparently occupying a space dangerously close to reality's fringe. Cameron Diaz, doing Cameron Diaz, is a sweet woman who gets caught up in the spy's spiral of violence. The circumstances of a plot involving a young genius, a vicious arms dealer and a super-powered battery are completely immaterial. This is a chance to watch beautiful people scramble through exotic sets, and as such, it succeeds rather nicely. Mangold directed the comparatively understated actors Russell Crowe and Christian Bale to convincing effect in 3:10 to Yuma
, but one gets the impression that the hyperactive Cruise overmatched him. While bullets, explosions, speedboats and bikinis whiz incessantly throughout, it's Cruise who fills the screen with the same irrepressible and slightly alarming energy he once displayed on Oprah's couch. That energy is the reason Cruise has been the biggest actor in the world since the Reagan years, but like most guilty pleasures, it's better in moderation.