Here is my order:
Empire Strikes Back
The most complete of the films IMO and an ending that pissed me off in a good way. LOL.
I went to go see the premier of this at the Cine Capri. Stood in line for hours upon hours. I still remember seeing the Wax Figures behind glass in the theater of all the characters. It was awesome!
Return of the Jedi
I have always had a love for this film. Yes, I know it had Ewoks but as a kid I loved them. This movie had more Yoda and Obi as a force ghost. Maybe it's the nostalgia that makes me rank this higher but I just love the duel with Darth and Luke as well. Probably one of the scenes that is most memorable to me to this day. Plus the Emperor was a huge dick! Loved it.
Revenge of the Sith
Loved the dark tone of the film. Yes, it had plot holes and felt a little choppy but it really was the film I wanted to see out of the 3 prequels. The light saber duel between Obi and Anakin was epic IMO. Unlike some I loved the back story, the plotting by the Emperor, the fight with the Emperor and Yoda and just about all the Jedi stuff.
Attack of the Clones
This is the first of the prequels that felt like Star Wars to me. Also, the film where I felt like Ewan McGregor hit his stride playing Obi. This is also the introduction of the Clone Troopers which I had longed to see since I was a kid and read an interview with Lucas talking about the back story of Storm Troopers. The Clone Troopers to my son is what the Jedi were to me as a kid.
Star Wars
I know this is probably blasphemy but I have always felt like the original film was one of the most boring of all the films. Felt that way when I was a kid too. Yes, it inspired but bored all at the same time. Love the scenes on the Death Star but even to this day I don't go out of my way to watch this one despite all the classic scenes that I love. The first time I had seen this film it ranked higher but after seeing Empire Strikes Back and how much better of a film it was, it put this film into perspective at least for me.
I think this films ranks higher to most Star Wars fans because of the nostalgia and inspiration that came out of the film. I remember when my son finally had seen all the films, the first thing he told me was this one was sort of boring. He didn't have the jaded view of seeing this one first I think. It reminds me of Yoda's line in Attack of the Clones......."Truly wonderful, the mind of a child is."
Phantom Menace
By far the weakest of the bunch. Not as boring as the original but the acting and dialog coming out of Jake Lloyd's mouth seriously almost ruined the entire movie for me. I felt he was that bad. Plus the ridiculous characters (Gungans, POD Racer Announcers etc..) made this feel like a Saturday morning cartoon. The Gungan-Droid battle is the poster child for bad CGI (meaning breaking you out of the movie).
The only reason to watch this film is for the awesomeness that is Darth Maul, the POD Race, scenes with the Jedi. The rest is garbage.