Stephen Colbert's Christmas Special

Tonight at 10 pm Stephen Colbert is going to be showing a special Christmas episode on Comedy Central: "A Colbert Christmas: The Greatest Gift of All!" The show has several special guests including Jon Stewart, Willie Nelson, Feist, Elvis Costello, and John Legend. I'm probably going to watch this in hopes that it will be funny(most of the time when Willie Nelson is on "The Colbert Report" it's always funny, so I guess this will be too).