Any Jim Henson related guests would be great. With the new Muppet film being filmed in the UK at the moment I am sure there would be a lot of interest. It is also the 30th anniversary of Fraggle Rock this year so any guests like Karen Prell, Kathy Mullen, Steve Whitmire, Dave Goelz, Dave Barclay, Rob Mills, Mike Quinn etc. Most of these people have worked on other productions such as Labyrinth, The Dark Crystal and Star Wars so there would be plenty of cross over fans.