Needed--Songs to motivate!

Just a reminder, I hope everyone is submitting their fav songs to run with to SMR. I am in serious need of new tunes....To make a long story short: A group from my running group was out for a girl's night out to wish one of our fellow runners good-bye ( Her family was relocating clear across the country and that made us all so very sad). Since we are a bunch of mid-late 30 year old moms who don't bar hop too often now, we didn't know where to go.....somehow we ended up at a hard core dance club/ most certainly drug infested local establishment (picture the frisking, pat downs, and electric wands upon entering to detect weapons....). Once there we were pretty much stuck since my 17 year old son was the Designated driver and just dropped us off......back to the music..........one of my favorite running songs, which happens to be an older rap song, came on....I exclaimed how much I love to run with this tune. To my shock and dismay, my friends exclaimed how such a song would certainly slow them down while running......hmmm.....I am the self proclaimed slowest runner "ever"..........but then I thought.......(this is my mind excusing my slowness)......It must be my music that has made me slow!!! Not MY fault.......Right?!! Soooooo----Help me speed up by giving me what songs motivate YOU!!! I mean submit them to SMR. Thanks! My slowness is now in your hands!