It's SO super cheesy, but St. Elmo's Fire Man in Motion by John Parr. (http://youtu.be/UaGsbv2skr8) It's so inspirational and pumps me up.

I have also been SO in love with Bon Jovi's Someday I'll Be Saturday Night. (http://youtu.be/GFLNbD4pwGg) This song gives me the strength to keep moving... I've been singing it for about 18 years. That's love, my friend.