The original, Mama Said Knock You Out [http://www.youtube.com/watch?v=-7l250E5uM4] by LL Cool J. Angry as fuck.
You know it as soon as the guitar comes in, Cowboys From Hell [http://www.youtube.com/watch?v=b-p8kvoyP4Y] by Pantera. They don't make metal like that anymore. More good riffs in one song than a lot of bands have on a whole album.
Finally, Machete [http://www.youtube.com/watch?v=mLJ6hwsq624] by DJ Hazard. "He gets the women; he kills the bad guys" What more do you need to know?
Ill listen to all three when I'm training. Cardio, bag work, whatever. They set the tone for a tough session.
And I'll be getting some Screaming Jay Hawkins today from Itunes following your post.