The Tetsusaiga theme, from Inuyasha.
Edit: My bad, it's "A Difficult Situation." That's usually played when Inuyasha's getting his tail handed to him, be it by Sesshomaru or Ryokuotsei or whoever.
The theme from Exo-Squad.
The opening theme from Tour of Duty (first two seasons...yes, it's Paint it Black, by the Doors, but it's still cool)
The theme from Gargoyles
Apparently, I like horns and percussion. Who knew?
Brad