God, I'm just happy I didn't see Eye of the Tiger seriously considered. I think it's gotta be Can't Hold Us.
But just to throw out some other options:
"We Takin Over" DJ Khaled (not really an intense pump up song, but kinda says it all in the name)
"Defy You" Offspring (Cannot stop us, cannot bring us down is the chorus...I mean c'mon)
"More Human Than Human" Rob Zombie (The intro riff always gets my hairs standing up)
"Space Lord" Monster Magnet (Long lead in, but where it picks up might make a good entrance)
"Whatever It Takes" POD (it WAS on the Any Given Sunday soundtrack after all)
But frankly, we're going to the Super Bowl. We could walk out to silence and I think it would be just as powerful.