There are a number of characters I'd like to see return- there have been some great ones named already. I definitely agree with the Sesame Street suggestion on Sherlock Hemlock- if I was going to name Sesame Street characters though, I'd have quite a huge list (Sherlock Hemlock definitely- Guy Smiley, Biff and Sully, Forgetful Jones, Clementine and Buster, Herry Monster, Bruno, Rodeo Rosie, Roosevelt Franklin, Betty Lou, Little Bird and Harvey Kneeslapper- to name a few......)
For The Muppet Show and The Jim Henson Hour and Muppets Tonight- I definitely agree with Hilda, Boppity, Doglion, Baskerville and Bean Bunny. I'd also love to see other obscure characters like Brewster, Gaffer, Betsy Bird, Dorothy, Leon and Digit and Waldo and others back. I also love the Muppet monsters so I'd love to see characters like Mean Mama and Timmy Monster and Luncheon Counter Monster and Flower Eating Monster and others back. Also, Zelda Rose, Miss Kitty, George the Janitor, Shakey Sanchez, Louis Kazagger and Lubbock Lou and his Jughuggers....and still so many others.
And I'd be ecstatic to see Skeeter make an appearance as a Muppet.