WATCH: Jake Gyllenhaal Is a Mystery Solving Body Jumper in 'Source Code'

It might sound kinda fun to experience the world through someone else's eyes for a few minutes, but for Jake Gyllenhaal in his new movie Source Code, jumping into a stranger's body is far from a picnic. He plays a military man assigned to find out how a train is bombed while inhabiting another man's body for eight minutes at a time.

Complicating matters further is his burgeoning affection for Michelle Monaghan, who accompanies the man whose body he's inside of on the train.