Gutrot hit level 70 last weekend. If you haven't heard about gutrot, he's a troll warrior who has leveled naked all the way - no armor, no weapons (only jewelry and potions).
They organized some nice party on his realm to celebrate and there are some cool videos posted about the event - ever seen a train of more than 500 lvl 1 trolls raiding stormwind? Eh well, lvl 2 really - when they entered goldshire they massively dinged 2 from the area discovery bonusses, really nice graphics effect, seeing tens of players ding simultaneously.
Here is one of the videos https://www.youtube.com/watch?v=-0ku-pIVNCQ.
And there are some forum threads on blizzard's official forum http://forums.wow-europe.com/thread.html?topicId=17702127&sid=1 (probably the longest thread on those forums) and http://forums.wow-europe.com/thread.html?topicId=1016343616&sid=1.