I could listen to Divided Sky from Phish's Junta album every day.
In fact, I've been meaning to set things up to use it as an alarm clock, as I know it gets me fired up every time I hear it, so it would have me wide awake and raring to go!
I just tested it - been lying in bed with a nasty toothache all afternoon and dang if I'm not ready to go get stuff done even now!