The guy rambling on and on and on about the various sounds was the thing that made me turn it off.

And George Lucas' monotonous voice that is like an elderly frog who just woke up from a nap. It was especially intolerable on the ROTS DVD commentary.

Star Wars has usually failed when it comes to additional features on DVDs. It's weird, because it seems like the type of film franchise that would excell at bonus footage, commentaries, makings of, etc.

I think The Simpsons' season DVDs set a great standard for commentaries. And when it comes to television (off topic, I know), I like South Park's approach of "mini-commentaries."