I can't believe dude had warrior last on his list for tanking class.....warrior has always been the most fun to tank with.
I learned to tank in BC and leveled protection. when the 3.0 patch hit and warriors suddenly had great aoe threat generation man that was gravy fun. Wrath was loads of fun running thru everything and aoe trah tanking and finishing the instances in races. but yes it got boring hence the alt days. I remember vanila days when it actually took time and effort to level and you stuck with one class; and you actually needed groups to help level faster hence the social game that is no more.
anywayz in wrath i made a pali tank which was a pretty cool to aoe tank level with questing. same goes with DK.s
the druid wasn't as easy but thats an opinion, some liked druids a lot. i tried monks; they were pretty cool for aoe tanking.
I still like warrior for their mobility. Palidins were the most boring to me but man did they have a bunch of buttons.....DK were pretty fun but you needed a good healer when your mitigation CD's were gone. I guess for me the least played tank i ran was the druid; to easy of a rotation and just not much to it....I didn't play monks up to 90....but it was shaping up to be a nice class.