sandstorm is so overplayed.... after countless robotics and martial arts competitions with that song playing ceaslessly, I beg for something else.

start with something soft, don't wanna shock-warm up.

In side of you in spite of you by Thou Shalt Not (good beat, good warmup song)
then move onto some faster stuff, like some SOAD. Then finish it off with a good speed blast, try for something like Mr Self Destruct by NIN. (that song always makes me paranoid for some reason...)