I thought it was great. Sure, there are problems such as the big gaping Leia plot hole, and General Grievous' favorite line seemed to be "cough, cough" but the good points far outweigh the flaws. My order, from greatest to worst:
Episode V: The Empire Strikes Back Episode IV: A New Hope Episode III: Revenge of the Sith Episode VI: Return of the Jedi Episode II: Attack of the Clones Episode I: The Phantom Menace