Theme Songs?

Alright, so I'm big on picking theme songs (for people, for life, etc) and well, I'd love to know what music you all are listening to on your journey. Do you have certain work out tracks that can't fail? Or songs that super inspire you? Would love to hear what they are!

Here's the song that whenever I hear, I instantly think 'Oh! That so needs to be the theme song for The Biggest Loser or something!' Good stuff: http://music.brightershades.net/track/pick-a-day Enjoy!