I'd say the Sithi from Memory, Sorrow and Thorn. Wake up, walk around, eat, play games, sleep, repeat... I can dig that.
And I do remember hearing somewhere that Return of the Jedi's planetary scenes were supposed to be on the Wookie homeworld (where, according to the books, they live in trees), but tall actors were in short supply, so Lucas made a play on the Wookie name, invented Ewoks, and hired midgets. Not sure of the validity.