Ghost in the Shell is definetly one of the best done Series that I have seen.
I was searching through some Bit Torrents and found the whole set of Sand Alone Complex Fansubs and it even had a half hour promotional trailer that explained a ton of what the series is.
This is a bit of info I got from that:
The movies and the Stand alone Complex series are actually separate. Same characters, same time, Same World, different dimension. The Puppet Master from the first film doesn't happen in the series.\
The Second season has all been released in Japan from what I read and there are Fansubs (LMF for one) to download and they have over half the season done now.
Seen the two movies (why everybody says one? The second one hasn't come out in the US?) and the SAC serie. Can't wait to see the second season (GITS:2nd GIG)
Even then if you can BitTorrent or just By the DVDs of SAC and just watch the series. The ending is one of the better endings out there.