It's a piece of music that's probably been used in a gazillion films / car adverts / documentaries, most recently at the end of Channel Four's Dispatches (on Haiti) today. It's basically the same four ascending notes over and over, but with chord changes, and then it goes all epic rock with distorted guitars. It's quite EPIC. Used pretty much interchangeably with Clubbed To Death as far as I can tell.

I imagine this won't take long, thank you in advance.