Like most families we have all the Star Wars vids on DVD and they get a regular thrashing over the school holidays. It's been years since i've bothered to sit down and watch them with the kids (which means Thomas, really) but I'm thinking that when I get off deadline (Ha!) I might give them another go. A marathon, indeed, but in the order suggested by Nicholas Carlson in this article at Business Insider:
There is only one proper way to watch the series, and it’s not from Episode 1 to Episode 6. There are lots of story arcs in the Star Wars saga that matter. The one that matters most, and every movie touches on, is the rise, fall, and redemption of Anakin Skywalker, also known as Darth Vader, also known as Luke’s dad.
Because of that, the best order to watch the movies is the original Star Wars, then Empire Strikes Back, then the second prequel, then the third, and then final movie in the original trilogy, Return of The Jedi.
Watched that way, you get a story that introduces a hero and a terrible all-powerful monster, reveals that the monster is the hero’s father, goes back in time to show how the father became a monster, and ends with the monster redeeming himself.
It’s a deeply resonant narrative framework — full of allusions to eras gone by and foreshadowing of drama to come.