Fortress2 right now. Hopefully in the near future, we can do more. But we're really waiting for TF2. On top of that, Q3 finally released source code for the 1.27 point release, and it should be out by the end of the week. Meaning beta1H will come shortly after to support the new point release.
Valve needs to focus thier time elsewhere.
Again, I'd like to try to do more, but I really don't know what to do since we are Fortress2, and TF2 is basically dead till its gone gold. I'll think more about it.