I picked up the Barenaked Ladies Holiday (Christmas and Hanukkah) album, and I put it in tonight to listen. Much to my amusement, their version of Jingle Bells includes the verse about Batman...

I look forward to the rest of the songs with trepidation and delight.

E.T.A. Okay, the kickin' Wurlitzer organ version of "O Holy Night" tops Jingle Bells. And there are fifteen more songs.