I'm zooming through this lot now. Now up is
alexb911's tutorial on
custom sounds. I've only got manuscript sitting around now, which I should have done, well, in the next few days. I'm also expecting at least one tutorial on displacement techniques for Source to be up by the end of my holiday (the 31st).
Want to get in on the action?
Write a tutorial yourself: you get a little flash title under your avatar and a shiny red award.