I think i might be the only one to notice this but when you do the giant Sons of Hodir quest chain Thorim looks like this
http://www.wowwiki.com/Image:Thorim.jpg
But from what i noticed in the ulduar raid he looks nothing like that he looks like loken http://www.wowwiki.com/Image:Loken.jpg
http://static.mmo-champion.com/mmoc/...ary/thorim.jpg
Those two pictures of Thorim look nothing alike