The series is very good, perhaps better than the first movie (and definitely better than the other movies, though those are still worth watching).
I agree. The tv series is better because with 50+ episodes, the creator(s) were able to present a more detailed version of the future described in the movies (I'm talking about the first one from 1995 and Innocence).
Heartily disagree. Half of the serie first season (the complex episodes) is somewhat interesting. The rest is mostly the usual sci-fi trops and goes from mostly avoidable (the other half of the first season) to plain bad (everything after). It has neither the depth nor the artistic chops of the two Oshii movies.
There's multiple movies and the original manga, too.