From what I understand Frank Oz shows up for 1-2 days of taping each season and does some stuff. I like that he does it. I'm glad he is a successful director, but it is too bad he isn't really with the muppets anymore. I think this phasing out started with the Jim Henson Hour or earlier. I do wish he would direct a muppet project if for no other reason than to have him puppeteer in it. I'd like to see him take on Piggy and Eric do Fozzie in a scene Oh the dreams of a fan.