This just released today, a Funny or Die Exclusive with Will Ferrell and John C. Reilly recreating the Bing Crosby 1977 Christmas TV special with David Bowie. Ferrell and Reilly are actually singing the parts – it’s their voices you are hearing. I remember Reilly singing in Chicago, and loved it. Same with Ferrell in Elf. The only comic relief are the facial expressions, and the ending. What do you think about the set design? It’s almost an exact copy of the original.
Off-topic, the second video is Reilly doing Mr. Cellophane in the movie Chicago.
Will Ferrell and John C. Reilly: Little Drummer Boy and Peace on Earth (video)
John C. Reilly singing Mr. Cellophane in Chicago (video)