Best running music?

7.5 miles today. I was going to go for a nice 10 mile jog, but since I had a morning meeting I ended up running in 90+ degree weather. I tried to stay in as much shade as possible, but I didn't want Elliott to get too hot so I cut things short. Heat aside, the run actually felt pretty good so I guess my marathon recovery went well.

I need some help. I'm looking for good running music. Sure, I usually do the podcasts, but I do like some tunes occasionally to help kick me in gear when I'm running low on motivation. However, I'm tired of my choices and my running playlist is much too short. If you have any ideas, comment here and list suggestions for good motivational running music. Maybe I'll pick up some good music for mile 40 of the ultra!

Here's what is currently on my running playlist:
Livin' On a Prayer--Bon Jovi
Blaze of Glory--Bon Jovi
Lose Yourself--Eminem
Run Rabbit Run--Eminem
Battle--Ganstarr
8 Miles and Running--Jaz-Z & Freeway
Adrenaline Rush--Obie Trice
Bring Me To Life--Evanescence
Wake Up--Rage Against the Machine

Okay, it's eclectic to say the least. Suggestions please!