Get the Flash Player to preview this asskicking song.

If you're like us, you'll occasionally discover a track which, for a certain period of time, seems very clearly to be the best workout song of all freaking time. Everything else, past and present, falls well short. Of course, eventually, another 'best workout song of all time' comes along and displaces it. But, still, those songs which at one point held that title make up an immortal cadre. Here's one of the immortals for you: big, angry, dark, thickly layered, and catchy as hell.