This doesn't have a whole lot to do with what I'm about to recommend to you, but I love Kurosawa films too.
But anyway, yes, considering your interests I do recommend the first Ghost in the Shell film. As far as the tv show goes (GithS: SAC--which I haven't seen), I've heard it's solid but far less grittier than the original film, which is a turnoff for me. A few other anime I'd recommend off the top of my head would be...
Cowboy Bebop
Samurai Champloo
Samurai X: Trust and Betrayal
Berserk
and the works of Satoshi Kon
These are well-known titles (I'm sure others can fill you in on less mainstream works), and also mostly for an older audience (particularly Berserk). Read a bit about these and see if any sound interesting.