Speaking of DVDs, I checked the final season of Fraggle Rock out from my library last week, and the first things I watched were the "You Cannot Leave the Magic" and the wrap party special features.
Not a whole lot on Richard in either of the features, but he does have some good moments. My favorite is in the wrap party, which he appears to be emceeing, after he introduces Jim Henson (after asking if he should read the list of bad things about Jim Henson!). Jim comes onstage, and Richard starts calling out from the audience "Praise the Lord", prompting Jim to respond with a Convincing John impression. Jim then reminisces a little about how he filmed the Purina Dog Chow commercials with Rowlf in the same studio that they would later film Fraggle Rock in. He mentions that was back in 1961, to which Richard chimes in from the audience, "Some of us weren't born yet."
-Kim