I, for one, loved the Alice Cooper episode. They really played off Alice's shock-rock image. Three great Alice Cooper songs (including my favorite, "School's Out"), the irony of Robin singing "Over The Rainbow", and my favorite part of the show, the UK spot "Once-A-Year Day!" (a great song from a great musical, "The Pajama Game"), if anything, so we can see Boppity and Thog again. (Note: Richard also used that voice for Boppity in that one episode of "The Cosby Show"...or was it David Rudman? He was on board by that time.)
John Cleese. 'Nuff said.
Connie Stevens--especially seeing Bert & Ernie out of their natural element.