Favorite Naxx Fight

While our guild hasn't completely cleared Naxx yet (working on 4 horsemen now), so far I've found my favorite fight to be Gluth.

For probably the first time ever, I've had an (interesting) critical role in the raid... other than to just stand back and pew pew... keeping the skellies rounded up and kiting them is loads of fun. Took me a few tries to get the hang of it (more just to get my hotkeys setup to kite than anything) since kiting is more or less completely unnecessary while leveling, but it's pretty sweet to finally do something that entirely dictates whether or not the fight will fail.

So what is your favorite fight?