Title
A few of mine are:
Goku vs Vegeta Saiyan Saga
Goku vs Piccolo Jr. 23rd Tenkaichi Budokai
Naruto vs Sasuke Part 1
Naruto vs Pain
All Shikamaru Fights
All Rock Lee Fights
Luffy vs Crocodile (All Fights)
Luffy vs Rob Lucci
Zoro vs Mr. 1 Daz Bones
Ichigo vs Byakuya
Inuyasha vs Bankotsu
Inuyasha vs Sesshomaru (All Fights)
I'll have to dig up a lot more later, these are of the top of my head.