This week at the movies, we've got rock 'n' roll ribaldry (Get Him to the Greek, starring Russell Brand and Jonah Hill); DNA disturbances (Splice, starring Adrien Brody and Sarah Polley); a canine caper (Marmaduke, starring Owen Wilson and William H. Macy); and espionage entanglements (Killers, starring Katherine Heigl and Ashton Kutcher).