This edit is pretty unique in that it takes all 6 movies and makes them into one, three hour movie viewable in one sitting.
I designed it, as much as was possible, to be a film complete in and of itself, that someone completely unaware of Star Wars could enjoy - in my mind, it's impossible for someone who's not a fan to start from episode 1 and just watch the series. It's just too difficult.
Putting everything into one film gives you the advantage of getting the full force of Anakin's story - At the beginning you see him as a child, you witness him turning into Darth Vader, you see how he destroys millions of lives, then you watch as the inherent love he has for his son takes him to a small, almost tragic step towards redemption. Watching it in multiple films, you'll never feel the full impact of that amazing story.
My cursory research tells me that the following are the closest anyone has come to doing something like this:
1. Topher Grace cut the three prequel films into an 85 min film
2. SW: Rise of the Empire cuts the three prequel films into a 4hr film
3. SW: Renascent uses ep's 1-4, cutting back and forth between Anakin and Luke's stories, cutting the films to 3h10m
I think there was another edit that cut eps 1-2 together, but I can't find info on it now. There may have been others, but this is all I've been able to find. All other edits I've come across only deal with one movie.
The principle I used in making the edit was: does this tell Anakin or Luke's stories? Does it tell the story of Jedi v Sith? Everything else I cut. So, there's a lot cut that's really awesome that just doesn't fit into those parameters - all the side stories, a lot of action...and most regrettably, most of Han Solo. Unfortunately, I couldn't fit him in.
On the plus side, all the lightsaber battles are shown without interruption, and every scene in the film moves the central plot and theme forward. There's a lot less action, actually, but a lot more drama. Watching SW like this gives it a very heavy, almost, I dare say, Shakespearean feel.