The game has only been available (at retail) since last Thursday, but a World of WarCraft guild has already cleared all of the player-vs.-environment (PvE) content in Wrath of the Lich King.
The guild, TwentyFifthNovember, is composed of members from "Nihilum and SK Gaming(Curse)" and could be considered to be a super-guild. The players come from two guilds famous for "world firsts" and other WoW accomplishments.
This achievement gets slightly less impressive when you realize that the content was available in the beta test of Lich King and was beaten in said beta. Furthermore, all of the planed PvE content is not yet in the game and will be patched in at a later date.
Still, congratulations to TwentyFifthNovember for beating Blizzard's newest offering in far less time than should be humanly possible.