Identifying a montage...

I was watching that video of the dog eating crackers on reddit's front page, which led me to a Skyrim speedpainting video, which led me to an AVA montage, which reminded me of a Halo 2 montage I'd seen years ago. So I went to the HBO news archives and started going through them but there's a LOT of posts to get through so I'm asking here in the tiny chance one of you has seen/still has that montage.

All I can really remember is that it was done in a very epic style (heavy on the effects, "epic" music), and at the end was a kind of bloopers reel with "Let It Snow" (I think - it was definitely a Christmas song) played over it, and then a message wishing the viewer a Merry Christmas and/or Happy New Year. It was pre-2008, I am sure of that.

It might be a strange thing to get obsessed over but I'll probably be scouring the nets for a few days looking for this damn video. I don't even know the name of the guy who did it, so any help is appreciated.