I think George Lucas should have been slapped when he was thinking up a certain totally not offensive amphibian(or bug-eyed alien, or flying tapir). Ewoks suck, yes, but it's not like they talk like Canadians and are completely useless.
Having said that, Attack of the Clones had some cool parts(who didn't enjoy seeing Yoda finally fight, or the Imperial march playing over the "good guys" victory). And Revenge of the Sith is a badass of a movie, if you hit the mute button every time Anikin and Padme are onscreen together.