Please include your reasoning for each film's rank. Here's mine:
1. The Empire Strikes Back Far and away the best of the bunch. Not only has the most menacing atmosphere, but the battle scenes are still nothing short of spectacular. Add to that the lack of any cute, fuzzy critters or kids, and IMO the best film soundtrack(courtesy of the legendary John Williams) in movie history. *This* is the way all the films should've been made. What a lost opportunity!
2. The Attack of the Clones Yep, I've thought this from the first time I saw it in the theater. If you can look past the wooden acting from Hayden Christensen, this is the closest to "Empire" in atmosphere and action. Many great scenes, some really good belly laughs involving C3PO during the final battle. I was very impressed by how Ewen McGregor has transitioned his character into what will grow up to be Sir Alec Guiness. Also, the casting was excellent. You just can't beat the great Christopher Lee as Count Dooku, and Samuel L. Jackson has a field day as Mace Windu. Natalie Portman! Schwing!
3. Star Wars The one that started it all. Perhaps it's impact is dimished today, but at the time of it's release, *nothing* like it had ever been seen before. The first scene with the giant imperial cruiser going by for what seemed like minutes, was amazing. And that first laser battle! Add to this a very charismatic Harrison Ford, sexy yet fiesty Carrie Fisher, fine support from Chewbacca, C3PO and R2D2....and the voice of James Earl Jones as Darth Vader, the unforgettable Sir Alec Guiness....I could go on and on. If only they would've left out the Cantina scene with the stupid hokey quasi-disco music.
4. The Return of the Jedi The biggest film f*ck-up in recent film history, IMO. What should've been the most intense, dark action-packed film sequels in movie history is let down by the inexcusable decision to introduce the Ewoks to kids in stores everywhere. At times brilliant, hokey, rousing, irritating, sentimental, frustrating....this film "could been a contenda". And what the hell kind of ending is that? I was like the cast of a sitcom lining up on stage and waving goodbye to their fans!!

But then again George Lucas was in charge. Go figure.
5. The Phantom Menace Jar Jar Binks, nuff said. Even the ever reliable Liam Neeson is cringing as he goes thru the motions. Ok, there are two decent scenes. The pod race, and the final light saber fight with Darth Maul. Other than that.....ugh.