A guild site named "Dirt Dog Gaming" has gone beyond simply posting a Christmas card, they've taken to actually writing, and singing, World of Warcraft Christmas carols.

You can find the lyrics in the thread.

Here is the song list:

Oh Karazhan, by Barenger
Silenced Mage, by Mirabell
Pew pew WIPE, by Barenger
Orcs infesting LBRS, by Brendan
Oh Holy Knight, by Jashoo
Winters Veil, by Mirabell
Halt, The Harried raid leader screams, by Datchery
Take it on a Raid, by Qyu
Tanking for the first time, by Mirabell