It's a shame about Source Code. It was directed by Duncan Jones, David Bowie's son, whose first film was the stunning Moon. I highly recommend Moon if you haven't seen it, though I warn you it's pretty bleak. Don't spoil yourself first, since I think the surprises/twists give the movie a lot of its momentum. I was pretty excited about Source Code but it seems to have been a sort of Hollywood sellout, classic "indie director gets a big budget and fucks everything up" syndrome.