To appreciate the remake, you've gotta see the original.

It's one of the strangest, most awkward, yet most famous Christmas collaborations in musical history - David Bowie randomly stops at Bing Crosby's house, and they somehow manage to sing together. It was from Bing Crosby's Merrie Olde Christmas special, which aired after he passed away.

Enter our two favorite comedians - Will Ferrell and John C. Reilly, who made their own version a few years back. And every year, we watch it and love it a little bit more.

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