For me this is the best Shippuden episode. It's not because of some important plot point or because of some favorite character, but instead because it's so well choreographed, soundtracked, animated, paced, colored, and voiced. It's like a rollercoaster ride, and I never get tired of watching it.
The taijutsu fights and the shadow blade throwing parts are so amazing.
Anyone who wants to be in animation for a career should spend a lot of time studying this episode. Also 82 and 219.