Long live the kingpin. Paul Bettany, the imaginary roommate in A Beautiful Mind, is a very real--and riveting--psychopath in this London-set mobster movie. In the late 1960s, ruthlessly ambitious Bettany becomes an apprentice to suave gangland leader David Thewlis. Before you can say "you dirty rat," Bettany goes all Single White Female on his boss by emulating his look, then looks the other way as Thewlis gets sent to prison for a crime he didn't commit.
Bettany's betrayal pays off as he ascends to big cheesedom. Even though the story's a bit scattered, Gangster energetically evokes the hip '60s with groovy split-screen effects and a swinging soundtrack. And Bettany's cocky swagger and snaky sneer make up for any minor mistakes. Just be warned--there's more than enough gruesome bloodletting and profanity for the whole mob family.