I've been amazed by the fight between gaara and the fuzzy-eyebrows during the preliminaries of the chuunin exam. The intensity of the fight is something that had not been seen yet, and it has still not been taken over by any fight.
This AMV presents a memorial of the Lee's last fight and how he can prove his way of the ninja. The song "Breaking the habit" of Linkin Park seemend perfectly appropriated because it's about a choice, a definitive and lethal choice, as for Lee-san when he makes up his mind in using Omote Renge, knowing he will probably not fight again.
I did not make this. I copy this comment off the AMV site which I start to hate now.