Do I really need to choose only three? ^_^

Favorite in-game: Quick Healing Jutsu
Funniest: Reverse Harem Jutsu/8 Trigrams 64 Head*s
Coolest looking: Kirin/Amaterasu
Coolest name: C4 Karura
Creepiest: Impure World Reincarnation

All I can think of right now...