I loved the Star wars films, and sure ESB and ANH are the best two, but the prequels arn't as bad as people make them out to be in my opinion. Revenge of the Sith is very well done, but should have had some more rebellion scenes and some confronation between Palpatine and Padme, and Padme's death sucked. She should have been killed by Sidious, then he blame it somehow on the Jedi. That death by Sidious would have represented the death of democracy.
Attack of the Clones isn't all that great, but it tells a story and is watchable. A story that had to be told, and a necessary part of the star wars story.
As for TPM. Only problems with this is the planet core scene, Jar Jar, and lack of Maul talking. I loved Neeson in this, as well as the Palpatine/Sidious character, and Im one of the few who likes Anakin in this film. I love that a lot of the film is set on Tattoine and once again a great story is being told. I love Naboo and all the fancy environments, which are necessary to show what the galaxy was like before the Empire came along and messed thigns up resulting in the style and stuff you have in the OT.
Although I got to be honest, I do think the character of Palpatine was the best character in the PT and now one of my favourties in the whole saga.
1) ANH
2) ESB
3) Revenge of the Sith
4) Return of the Jedi
5) The Phantom Menace
6) Attack of the Clones