Bah, I lost interest in tanking shortly after hitting 80 in WOTLK.
Having tanked through zero-aoe in TBC and Vanilla, the WOTLK playstyle "AoE everything" kind of ruined it for me. Talking heroics here. AoE tanking was too easy, and mobs did too low damage so no need to CC anything. Naxxramas wasn't any better, and I kind of put my warrior on the shelf after that, except for getting welfare T9. Enough mindless ranting that no one will pay attention to, and its also off topic. /slap-on-wrist
ON TOPIC:
I'd still recommend warrior to anyone who's willing to try tanking. It is as said, the most respected tanking class.
You have very nice mobility, stuns, interrupts (via stuns and shield bash, heroic throw), spell reflect. Not too much cooldowns, a fairly straight forward "rotation/priority queue" with some high nice crits so you can keep it interesting in this expansion.