Well I am a huge fan of all major Rock Lee fights, so here are some lists of episode which i love:
- Episodes 49-51 (Rock Lee vs Gaara)
- Episodes 123-127 (Rock Lee vs Kimimaro)
- Episodes 84/85 (Kakashi vs Kakazu)
I have always liked well constructed intense fights. I personally didn't like a lot of the Naruto vs Sasuke, but meh that's up peoples opinions.