It looks like FX are showing the whole series :) though I don't have cable or Sky :(

Gay USA sketch is from the "failed sketches" episode that aired near the end of season 2. It was essentially a normal show with Dave introducing the clips in front a live audience, but all the clips were from incomplete/"failed" sketches.

You must have missed that sketch during a bathroom break, because I remember it well (how can I forget a gay klansman wearing pink robes).

I got all excited at the prospect of a Chappelle sketch I had never seen, then was disappointed that I had already seen it. But after watching it, I'm glad I did. These things just never get old! I decided to watch all the other sketches again, and all I can say is that, while I respect Dave's decision to walk away from the show, man, I really feel like the world is losing out because of it.

It is shaping up to be a bad year in TV, with the final eps of AD and Chappelle's show, and show's like Four Kings and Crumbs left to try and fill the void.