The first 3 were OK ('cept for everyone waving Buh Bye at the end).
But the pre-quels have been downright insulting! Vapid, kiddish, juvenile with the most wooden acting ever.
It got significantly worse with the release of the "deluxe" version of Star Wars in '97. Man, was that awful. No cleaning up of the special effects, just a bunch of computerized cartoon characters thrown in. Oh yeah, and that stupid expanding ring coming out of nowhere when Alderaan and the Death Star were destroyed.