A professor sent me this link the other day and it is one of the funniest recordings I have heard in a long time.
Some info from the site.
"If you need a good laugh, and I mean 'can't breathe, stomach hurts' belly laugh, listen to the worst rendition of Oh Holy Night ever. It starts out as sounding like a merely poor rendition of the song, but just wait."
http://www.youtube.com/watch?v=Mk4woNRD7NQ
Sorry if this has been posted already. Did a search and came up clean.
Enjoy,
Chad