Here's the playlist that was on my iPod for the 10k run last weekend. I know a lot of people prefer to run races without the iPod (not to mention it's actually against the rules for many races). For the 5k this weekend, I'll probably forgo the headphones. But I usually run with music, and I was pretty intimidated before the 10k, so I felt like I needed all the extra motivation I could get to keep going. And these songs did it for me!
Short Skirt/Long Jacket by Cake
A Peak You Reach by Badly Drawn Boy
Sex On Fire by Kings of Leon
PJ & Rooster by OutKast
All These Things That I've Done by The Killers
Basement Bhangra Anthem by DJ Rekha
Sons & Daughters by The Decemberists
Elenore by The Turtles
Ping One Down by Gomez
Super Bon Bon by Soul Coughing
Ghetto Rock by Mos Def
The Underdog by Spoon
Viva La Vida by Coldplay
Idlewild Blue (Don'tchu Worry 'Bout Me) by OutKast
Airstream Driver by Gomez
Strange Times by The Black Keys
Could Be So Happy by Heartless Bastards
The Rockafeller Skank by Fatboy Slim
Baby's Got Sauce by G. Love and the Special Sauce
All links to purchase the songs at Lala. I think that you can listen to any song free, once, at Lala. So if you're interested, check them out!
I just looked, and I also posted my playlist from when I ran the Flying Pig 10k in 2007. Many of the songs are repeats. I guess if they work, they work!