Ahhh! I saw a link to this on YouTube a while ago, but can't find it at the moment. It's from a half-hour wrap-party type production that involved the Fraggles planning their futures now that the Fraggles were over. Boober was calling all his famous friends. Wembly was hitchhiking, etc. And it ended with that beautiful, bittersweet song and promise that they would be back. And they are coming back!