Here's my playlist on my MP3 player for my workouts.

1.) Pump it up (remix)
2.) Eye of the Tiger, by Survivor
3.) Push It, by Rick Ross
4.) Heart of a Champion, by Nelly (One of my ALL TIME favorite workout songs. Really gets you pumped and motivated)

5.) Rollin, by Limp Bizkit
6.) Everybody's Screaming, by Lost Prophets
7.) Spirit Never Dies, by Masterplan
8.) X Gon Give it to Ya, by DMX (Extremely explicit content in this song though. Huge F bomb, lol)
9.) Party Up, by DMX
10.) Collide, by Skillet
11.) The Final Countdown, by Europe.

Hope you like the songs, and have fun!

I think I've added atleast 50 new songs to my iPod! Thanks guys, can't wait to try them out tomorrow!

Other good ones "We Will Rock You" by Queen, "American Idiot" by Green Day and "I Wanna be Sedated" by The Ramones.

I'll try and list some great songs that are fairly fast-paced, I only listen to satellite radio so I have no idea if they're mainstream or unheard of on regular radio...they're all pretty good, at least I think. Mostly alt-rock/pop type music, you can probably listen to a preview on amazon of most of these songs before you download.

We are scientists "Nobody move, nobody get hurt"
Nine Black Alps "Cosmopolitan" (lyrics can be ignored, as they go something like 'you're not pretty enough, you're not skinny enough', unless that actually motivates you and not demoralizes you)
Arctic Monkeys "I bet you look good on the dancefloor"
Blur "Boys and Girls"
Hot Hot Heat "Bandages"
Gogol Bordello "Not a Crime" (this is insanely upbeat gypsy punk)
Kaiser Chiefs "I Predict a Riot"

some older stuff I can think of offhand that still rocks:

Tracy Bonham "Mother Mother"
Veruca Salt "Volcano Girls"
Marvelous 3 "Freak of the Week"

Forgot one! (Many, actually, which were picked up by others. Love Maroon Five's Wake-Up Call!)

I Will Survive - by Gloria Gaynor - for those times when I'm not sure I will!

I've been working on building up my exercise/upbeat music (I use it to dance around my apartment). Here's a sample of my list so far.
Teenagers - My Chemical Romance
Facedown - Red Jumpsuit Apparatus
Paralyzer - Finger Eleven
Dance, Dance - Fall Out Boy
Holiday - Green Day
The Pros and Cons of Breathing - Fall Out Boy
You and Your Hand - Pink
Wake Up Call - Maroon 5
I Write Sins Not Tragedies - Panic! At the Disco
Have a Nice Day - Bon Jovi
This Ain't a Scene it's an Arms Race - Fall Out Boy
Sugar, We're Goin Down - Fall Out Boy
Beverly Hills - Weezer
Black Horse and the Cherry Tree - KT Tunstall
Cotton Eye Joe - Jock Jams
Dark Lady - Cher
Do Ya - ELO
Fighter - Christina Aguilera
A Hazy Shade of Winter - Simon and Garfunkel
Here I Go Again On My Own - White Snake
Hips Don't Lie - Shakira
It's Raining Men - The Weather Girls (one of my favorite)
Jungle Love - Steve Miller Band
Love in an Elevator - Aerosmith
Motownphilly - Boyz 2 Men
My Prerogative - Britney Spears (please, no judgements )
Once Bitten Twice Shy - White Snake
Paradise City - Guns N'Roses
Right Now - Van Halen
St. Elmos Fire - John Parr
Trouble - Pink
We Didn't Start the Fire - Billy Joel
You Can Call Me Al - Paul Simon
You Shook Me All Night Long - ACDC

There is really no rhyme or reason to my list, but it keeps me entertained and I rarely get bored with it. I have many other to add to it, but I don't buy music very often.

If you go onto Itunes and look up free downloads they sometimes have workout routines with music in the fitness section. My personal favs are techno because the beat is supposed to mimick a heartbeat moving faster and slower and my body just seems to meld to the beat, techno is good for long runs or endurance training because it keeps you on target. For Techno try Benni Benassi. But i also like to listen to Cascada, "cant stop the rain" because her music is fast paced and I second the pink music as well.

Oh and if you have a thing for 80's music
the police are pretty good for working out to along with anything from Footloose or Flash Dance

I heard Jack's Mannequin "Dark Blue" the other day, it was a song that I used to listen to a lot and LOVE, now it's on my iPod.

Wow, I love how this thread is growing - great suggestions all!

This might be old news for some of you, but couple of days ago I found this site: JogtunesIndie. They have free 30 min. podcasts with running music - they even give the bpm for each song. So far I've listened to two of them and liked them a lot - both for running and for discovering new bands. At times it's a little chatty (mostly for the first couple of minutes) but the songs are great if you like indie music.

Soundtrack for "The Full Monty" is one of my favorites.

These are older songs but they are always on my workout play list becayse they get me so pumped.

Kelly Clarkson - Never Again
Kelly Clarkson - Since You Been Gone
Pussycat Dolls - Buttons
Maroon 5 - This Love

We recently did a routine in my Step class to "We're not gonna take it" by the Twisted Sisters and it went down a treat! Everyone singing along and it really revved everyone up.

There's a rap song called We Ready by Archie that I really like. My brother used to wrestle and would listen to that song before every match. Works for both of us!