There is a disc that my Brother and i use as part of our "reference listening sessions" when comparing gear. As such, we've heard this track a million times. It has some very fast and dynamic percussive sounds that are of great impact and that's why we use it. If it sounds slow, soft and rounded, we know that the equipment lacks the amount of speed and finesse to reproduce both subtle details and maximum dynamics.
After installing a new component into the system and giving it some time to warm up, i popped this disc in. After spinning through a few tracks, i went to the specific cut that we listen to most of the time. When a certain part of the song came up, i literally jumped out of my seat as it startled me. If my Brother hadn't experienced the same thoughts and noticed this himself, i'm sure that i would have looked like a "kook". The sound was SO fast, dynamic and impactfull that it literally startled me enough to make me lunge forward at full throttle. Needless to say, we still laugh about that to this day : ) Sean
PS... Much like Mwilson's comments, i was using Klipsch speakers also, but these were highly modified.