Most of the time i like to use the pit bull songs during the workout but right now i am quite boring, suggest me the good fast music which stimulate me during my workout.
It totally depends on your music taste and what you are going for. I love upbeat fast music for a work out, but recently I've also found that something more mellow can sometimes help me put "mind over matter" in a corny "zen" sort of way when I really hit a wall during cardio or something similar.
Anyway, if you want some suggestions try:
POD
Marilyn Manson
Powerman 5000
Papa Roach
Cake - "Going the Distance"
Foo Fighters
Ice Cube
Beastie Boys
Ting Tings
Black Eyed Peas
Andrew WK
50 Cent
Gravediggaz
Wu Tang Clan
The Killers
Gwen Stefani
Missy Elliot
Of course pretty much any club, techno, or house/trance is going to have a fast beat. It really just comes down to what kind of stuff you like to listen to.
Try some Rage Against the Machine or Drowning Pool