I can't say I've seen anything quite that agressive when I've looked across the start corral, but then again, I haven't been inside the music player of every running enthusiast. There are most likely as many shades of "pump-up" or "cool-down" on race day as there are shades of race-day attire. So what is the best state to be in so you can run your best race?
Donohue, Miller, Beisecker, Houser, et. al. (2006) studied the effects of brief yoga exercises and motivational preparatory interventions in distance runners. They had participants to a one-mile baseline run, then randomly assigned them to participate in either brief yoga exercises, motivational shouting exercises, or no preparation about 20 minutes before a second one mile trial.
Participants assigned to the motivational intervention improved their running performance significantly more than those assigned to the other two conditions (British Journal of Sports Medicine, Vol. 40, Ed. 1., Jan 2006). But if you're not into screaming bloody murder just before a race to pump you up, perhaps you might want to try the yoga.