Click on the film stills for more details and reviews on this weekend's new releases and repertory screenings, which include Sherlock Holmes; The Imaginarium of Doctor Parnassus; It's Complicated; Police, Adjective; Alvin and the Chipmunks: The Squeakquel; Christmas in July; Christmas on Mars; Back to the Future; Spaceballs; Blazing Saddles; and The Hurt Locker.