Fury of the Dragon or whatever it's called in the martial arts sets is pretty decent if you have lots of focus stacks, I believe. Much like unleashed rage in that regard.
Energy storm in all the elemental sets is pretty terrible from everything I've heard, while Planar Fracture from any of the magic/supernatural sets is kinda meh but still passable. I have it on one character for concept, but I don't use it that often.