I caught a rerun of the recent Jar Jar episode of Clone Wars, and there's actually a serious moment in between the slapstick.
Jar Jar finds what is no doubt one of Anakin's jedi robes in the closet aboard Padme's ship, (after he manages to wreck it!) and wonders out loud what it would be doing there and who the owner is. (He wears it for a disguise, and is mistaken for a Jedi for the rest of the episode.) Threepio obviously knows the answer, but weakly dodges the question.