Most of my workout bands have already been named, so here are a few individual songs:
Offspring - Hit that, Million miles away, gotta get away, gone away, Kick him when he's down
Ozzy + DMX - Nowhere to run (south park-chef aid)
Ozzy + black label society - Stillborn
Tool - Aenima, Hooker with a noodle, Hush, Parabola, Schism, Prison Sex (for Funked)
System of a down - Chop Suey
Stone Temple Pilots - Sex type thing, Unglued, Break on Through
Sponge - Disconnected
Smashing Pumpkins - zero, Bullet with Butterfly Wings
Primus - Winona has a big brown beaver
Pearl Jam - Why Go, spin the black circle
Our Lady Peace - Hello Oskar, Neon Crossing, Starseed
Opeth - Remember Tomorrow (iron maiden cover)
Nirvana- breed, sliver,
Motorhead- Orgasmatron
Monster Magnet - Powertrip
Marilyn Manson - Highway to hell, the death song, the fight song, mobscene, don't pray for me, disposable teens, rock is dead
Linkin park - faint
Led Zepplin - Immigrant song
Korn - here to stay, corners of my mind, make me bad, blame
Judas Priest - Deceiver
Iron Maiden - the Clansman, the mercenary, Fear of the dark, aces high
Hole - Violet
Godsmack - Voodoo, whatever, now or never
Faith no more - Falling to pieces
Cradle of Filth - Hallowed be thy name (iron maiden cover)
Butthole surfers - underdog theme
Bush - machinehead
Black Sabbath - NIB (reunion CD), children of the grave (reunion)
Anthrax - Pipeline, medusa
Alice In Chains - We die young, angry chair, sea of sorrow
AC/DC - Shoot to thrill, stiff upper lip, thunderstruck, highway to hell, money talks
That's my workout folder. I just pick 20 or 30 songs to throw onto an MP3 player before I go.