Director Harold Ramis leans away from the Groundhog Day side of his personality and toward the Caddyshack side with Year One, a broad comedy set in more-or-less ancient times. The film's cockeyed timeline puts two wandering cavemen (Jack Black and Michael Cera) through a rapid-fire series of biblical events: Cain (David Cross) slaying Abel (Paul Rudd), Abraham (Hank Azaria) preparing to smite his son Isaac (Christopher Mintz-Plasse), and everybody converging on Sodom, the Genesis equivalent of Las Vegas. The jokes range from droll religious references to Apatow-ready testicular gags, but almost all of the real humor comes from the efforts of the performers to put things across.