Quest & Item Database. Its like WoW's Google.
Thottbot

Addons Addons & more Addons!
Curse

WoW's encyclopedia! Learn about all the raid fights here..DO IT!
Wowwiki

Know your enemies..and friends!
Armory

Everything you'll ever need to know about Zul' Aman.
Pillage ZA

I've cleared ZA before so I know most of the fights. I just don't know the pulls. With Akatsuki we actually almost managed two bosses under the time limit. Lost the seconde chest by 30secs!!!

Yeah we may have to start trying ZA runs with some of the more well geared players.