Yes, I've read those, they're absolutely brilliant! Yuletide was my grail this (last) year, I was stunned by the quality of some of the stuff. cimorene111 also has some more J&W recs here. She covers pretty much all that I've found so far, if you were having trouble finding more.

I cannot recommend Blackadder highly enough, seriously. Season 1 was good, but then Ben Elton joined the club and seasons 2, 3 and 4 contain some of the best of British comedy, ever, and really are the best things Atkinson has ever done. Laurie is in there from 2.6 onwards, and, of course, is gut-bustingly good. There are also tons of cameos by other British comedians if you're a fan. The specials done more recently, unfortunately, do not live up to the originals, so I'd recommend avoiding them until you've seen the rest. And for optimum Laurie enjoyment, get season 3 :-D I'm loving him in House so much. I love the way his face moves.