We've been on a movie trailer frenzy lately, and here's the latest: "Source Code," starring Jake Gyllenhaal, Michelle Monaghan, Anna Kendrick, and Jeffrey Wright. Gyllenhaal plays a guy who is sent to inhabit the bodies of guys in the final eight minutes of their lives, and finds himself on a train that's about to explode. When it does, he finds himself back on the train, with the same eight minutes to go, again and again. It's seems like a cross between "Groundhog Day" and "The Matrix" and is directed by the same guy who made "Moon." Check out the trailer below.