All I can say is on Thursday I took on the task of watching all six movies back-to-back. It took almost 15 hours (Because the stupid plummer came and bothered me during the club scene in Episode II). Fans have to watch all six movies in Episode order I-Jedi, but new-comers should watch the movies in the order in which they were made. Star Wars-Sith.
Watching 13+ hours af Star Movies was pretty awesome. I was waiting to do this since Episode I came out. And basically all I can say is Episodes I and II are not that great, story connection a little weak (Being nice) but the rest are awesome. And you really only have to watch III, Empire and Jedi to get the real story of the movies in which Lucas implied. The chosen one's fall and his redemption by his son. I get goosebumps every time I watch those movies (And fight back tears at III and Jedi (especailly the funeral pire)
I don't know why everybody disses Jedi. Yeah the Endor battle is a little crapy, but the whole 6-part movie revolevs around Anakin and Luke, that's why I think III and Jedi might be the best of the herd.
And yes there are numerous things that don't make sense between the originals and the prequels. But that is a whole new thread. We all can go on for years discussing that.