It looks like a terrible dream for Jake Gyllenhaal -- and a wild, fun ride for us.Gyllenhaal is back in soldier fatigues in his new movie, 'Source Code,' in which he plays a soldier in a very violent version of 'Groundhog Day.' He has to keep reliving the last eight minutes of peoples' lives until he figures out who killed them -- and you thought Bill Murray's situation with Ned Ryerson was bad.