What's most amazing to me is that I still can't figure out if it's a practical Frank Oz style puppet or if it's CG. If it's CG the animators have done an
incredible job mimicking the movements of the original granola-bar-stealing goblin we met on Dagobah all those years ago. The head-turns, the ears, the little grabby hands... amazing.
I don't really want to know either way, honestly. It's part of the charm.