Any Christmas parodies that tickle your funny bone?
This song always cracks me up. The response from the women in the crowd make it that much better.
Walkin round in womens underwear! R place x-mas show (http://www.youtube.com/watch?v=-7prjvaNEY4#)
Bob Rivers (Twisted Tunes) has done a lot of Christmas song parodies, including the one OP said.
Robert Lund's Elves Gone Wild CD has a lot of good ones.