My youtube channel primarily focuses on the w.i.p. maps from this community. In my more recent videos, I've played other people's maps with members of the community on their server. Older ones were played by myself against valve bots with pre-made meshes or ones I've generated through the console commands.
I've also uploaded a few videos about maps from gamebanana. Sometimes, game footage from video consoles such as NES and Wii are uploaded instead.
I have two playlists for the w.i.p. map videos: one for map testing/custom maps and one for the April Fools' Joke Map Gameday 2012.
http://www.youtube.com/user/kah4068