Just a quick pop-in to say that I have just recently discovered Low Strung, and I love them!  They're a group of cellists originally out of Yale University that play rock songs on their cellos.  My favorites are Livin on a Prayer, Fix You, and of course, Don't Stop Believin' (below).  I'm seriously considering buying the CD for myself as a late Christmas present.
Just in case you need a little break from the Christmas songs.