Well, this one is. Here's the writeup from NoFireFrog:

That's right, its Bowser64 and this time he's brought us his archive. Bowser64's first video appearance was a couple days before Christmas '05 and he's been bringing the presents in ever since. With a good mixture of all kinds of tricking/glitching/jumping awesomeness from both Halo 2 and Halo 1 this archive is a "grab bag of goodness" with something for everybody.

This is first-class stuff. Very nice work by Bowser64.