This started as a top ten, but gradually expanded:
Cross-Eyed Mary (Jethro Tull)
All Along the Watchtower (Hendrix; but the Dave Matthews Cover from Live at Red Rocks is great too, and maybe better for working out)
Born in the USA/ Born to Run (The Boss)
Wake Up / No Shelter/ Killing in the Name of (Rage Against the Machine)
Can't Stop (Red Hot Chili Peppers)
Kashmir/ Whole Lotta Love/ Ramble On (Led Zeppelin)
Bullet the Blue Sky (U2) and U2's cover of "Helter Skelter" on Rattle and Hum
Tumbling Dice (Rolling Stones)
Baba O'Reilly (The Who)
Sabotage (Beastie Boys)
Of course, Eye of the Tiger gets honorary mention.... as does the "Chariots of Fire Theme" and almost every Queen song ever
I don't listen to a lot of rap, but Eminem's "Lose Yourself", and Jay-Z "99 Problems" are on my workout list
Chris
26m w/CF