The Fourth Draft of ESB had a humorous elevator scene similar to the one in RotS. Hard to imagine Lando, Leia, Chewie, Threepio and Artoo stuck to the underside of the elevator ceiling. Wonder who got to nix these scenes. (#393)
http://starwarz.com/starkiller/2010/03/the-empire-strikes-back-shooting-scriptfourth-draft/