From Roland Emmerich, writer-director of Independence Day and The Day   After Tomorrow, comes this prehistoric blockbuster about a studly,            mammoth-slaying caveman (Steven Strait) who embarks on an epic adventure to      save his girlfriend (Camilla Belle) from slave traders. Narrated by Omar       Sharif. Co-written by Harald Kloser.                                           Roland Emmerich---USA---2008---109 mins.