Shamans. No doubt.
Our class just wtfpwned Tseric in the official WOW forums.

Shammy FTW

warlocks or hunters will be the best class class to start with. These 2 are the easiest classes to play and almost the most overpowered classes in wow. More advanced players might think of rolling for healing classes as these healers will have more stress compared to rest as these dudes are the heroes that keep the whole raid/party alive.  Healers that fall asleep during a battle will cause the whole team a wipe or if they heal wrongly and ignore the main tank for a while will also cause the team to wipe as well.

back to the topic: the most fun class to play i think is still a mage or a druid.
Mage : the ability to port , make food and water n also poly
Druid : transformer!! plus the bear dance is fun

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Added on May 18, 2007, 11:31 pm
the dude reached lvl 15 or 16 on his shammy la. give him some credit

Warlock n Hunter can solo most 2-3 man quest in outland, lol

this dude neo_sabbath here have been boasting about his lock for all i can remember, saying that my mage cant beat his lock (which is true with my crappy dmg to him) and mages are useless aside from the AI buff, food and drink for the raid party and serve as a mana battery for a lock in pvp. Mages are still there for a reason and mages can make a low level instance run a breeze if you wanna help power level and get all the nifty items for a friend's low lvl toon.