I think I liked Blitz Ace the best because Auron, Lulu, Wakka, Rikku, Yuna, or Kimahri can pass him the blitzball, depending on who you talk to first (or the most) or who you heal the most with Tidus. That was awesome.

I kinda liked Seymour's overdrive. It's a pain in the neck to wait for his Overdrive to fill but I had to see it once.