Empire Strikes Back (was always at the edge of my seat)
Return of the Jedi (kind of boring, but great climax)
A New Hope (kinda boring with the plot development, but still great)
Revenge of the Sith (haven't seen it, but doubt it'll be better than the OT)
The Phantom Menace (It still had a Star Wars feel. Just exclude the Jake Llyod and Gungan scenes)
Attack of the Clones (the most forced love relationship ever and boring until the end, which sucks. Only good in giving the Fett-fans Jango, who sucks)