Finished up a couple of Xmas tunes about a month ago, both artists allowing free downloads for the holiday season:
"Big Red Sleigh" by Duane Deemer 
This song was so much fun to record... we worked on it about 5 to 6 hours, and the entire time, we're all dancing and laughing. The "elves" are 3 of us around one mic, double-tracked, then set to "Chipmunk" mode on the 'ol pitch-eroo in DP.
Duane Deemer's Myspace Page "Hope for Me" by Tori Sparks 
The interesting thing about this song is that we recorded the guitar, then felt like it was too fast, so we brought the tempo down a bit then I set Soundbite to Tempo, which created a cool effect on the guitar (jittery/garblety). Of course it wouldn't work for most things, but it sounds pretty cool here.
Tori Sparks' Website