I haven't see any first hand breakdowns of the DVD extras, and as I was writing it in an email to my brother (I got him the set for christmukka
) I figured I'd copy and past...
Volume 1 (Season 1&2) has an hour long documentary on the beginnings of Seinfeld and is very interesting and funny. They've done an awful lot of interviews for the DVD's with just about everyone that was involved (including the one's for the remaining seasons [there's a short teaser]). It also has two of Jerry's performances on the Tonight Show, and one of Michael Richard's. There are two versions of the pilot episode, contents wise they are both identical, but the revised version has been altered so the music and titles match the rest of the series.
Volume 2 (Season 3) has a 20 minutes Kramer Vs Kramer documentary. Which again is very informative and despite the title focuses almost entirely on Michael Richards, there's more Kenny Kramer in the Volume 1 documentary.
Both volumes have around 10 minutes of bloopers, commentary for a least one episode per disc, notes about nothing (subtitles explaining pop-culture references, interesting tit-bits, and Kramer's entrance count (
I'm looking forward to seeing the count on the finale...). There are inside looks for most episodes that are roughly 5 minutes long and have insights from the cast and crew on that particular episode (some of the footage is repeated in the documentaries). There are also quite a few deleted scenes, I'd say maybe as many as every other episode. Also some episodes have the original network introductions by Jerry. Both volumes have unused stand-up footage of Jerry (the stuff used for the intro and outro's at that time). Plus there are some originals ads for the show and easter eggs.
I believe they've been transferred to HiDef, I don't have a HD TV but I look forward to watching that way in the future