Cousin Itt was usually voiced by the show's producer Nat Perrin (good friend of Groucho) but sometimes Carolyn Jones would do so too. Thing was usually Ted Cassidy but not always. The cast of guest stars reads like a Who's Who of character actors, really impressive. Hell, even disgraced game show host/producer Jack Barry began his comeback on an episode.

Also, that giant polar bear was (at that time) the largest ever shot and stuffed. In early episodes (or perhaps just the pilot) it was brown, they later dyed it white so that it would photograph better. Jackie Coogan's career had been in the crapper until this show, and he initially was turned down for the role......he went home, shaved his head and came up with the future signature Uncle Fester costume and got the job. He also suffered from narcolepsy and would fall asleep on the set between his shots.

Not that I'm a fan of the show or anything.....

Anthony