Currently there are
two "seasons" of Stand Alone Complex. The first series is comprised of 26 episodes, some of which fit a larger continuity ("Complex" episodes) and some that "Stand Alone." It follows the course of Section 9's activity from about the middle of the first manga series and follows a timeline in which the Puppetmaster does not appear.
All in all, it's a decent series. Some of the visuals are excellent, and various episodes are very good. I don't think the series as a whole holds together as well as the film GITS, but everyone will have a different opinion on this, I'm sure. There is a very good episode partway through that is very good, a
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two-stories-at-once episode in which a Tachikoma has a day off and Motoko visits a very strange theatre ...
Also in the list of Very Good Things about SAC is the music. Done by Yoko Kanno (who also did Cowboy Bebop and various Macross films), it is uniformly good and and sometimes excellent. The opening song is especially brilliant: "Inner Universe," sung by Origa. It is in three languages, and even though very few people will understand all the words, it is stunning.
BTW, I did an interview with Kenji Kamiyama and writer Yoshiki Sakurai that appeared in Penumbric magazine in October 2002; although the magazine is long defunct, you can view the pages as a pdf here
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