I am working on the 2007 show. Right now I am looking for new tunes to synchronize this year. I will not be able to reuse the sequences from last year easily, so I will probably pick all new music. Of course there will be a Carol of the Bells, probably not one of the two I used in 2006.
I am currently considering two Carol of the Bells - a cool, modern Bare Naked Ladies version and a rousing techno Arctic Express.
Beyond Carol of the Bells, there is a great swing-vibe Frank Sinatra Jingle Bells, an 8-bit Jingle Bells, and a folksy Canon in D.