This includes the "web documentary" series on the making of the film that's available on the official Star Wars website ( although only 15 of the complete 18 parts are included here , likely for disc space reasons - missing are Going to the Dark Side, Behind the Curtain and Ten Gallons of Buildings)
Argh-- this sort of Lucasfilm video release shenanigan isn't a surprise, but come on. I mean, if you're gonna go the whole nine, go the whole nine. If it was really a matter of space, couldn't a bit of the extraneous bits go (like some of the video game stuff), so the whole web doc could be included?