I really like how the Dragon Clan Namekian HTB skills look. They're very flashy and just flat out look gorgeous. As far as the basic skills go, though, I've always been partial to the Makankosappo, and I think the way the screen goes dark when you use it is a great effect. It's not like most other attacks in that it's not a simple orb, beam, or so on. It's one of the more unique attacks, and I really like how it's presented in Online.
Special Beam Cannon am i right im a little rusty lol
Last Resort,Super Khame,Dodon,Burning Attack,Big Bang (and almost all of the fighters skills look cool)...Human Extinction,Black Hole Beat...and many more i like :-D