Nice playthrough!

I deffo vote for keeping the briefings in; This is a complete longplay so saving as much of the content as possible is the way to go. Not many of us here would have the patience to if we did it!

Besides, people that don't want to see them can skip, whereas if it was done without the briefings there wouldn't be any way of seeing it.
I like the idea of a commentary, but youtube doesn't allow dual-audio tracks.
You considered making an ogg/mkv version (Xvid or H264?)? Then you could have full resolution, split audio tracks for game sound/commentary, maybe a subtitle-track for the commentary... I wouldn't mind seeding a torrent of it
