I'm seeing quite a few recommendations for good shows in the comments, under an article about GITS and Mamoru Oshii, but surprisingly no one has brought up the two other fairly well-known (?) works: Angel's Egg and Urusei Yatsura 2. The first one just got the news about a 4k upgrade next year and first time Western release, while the other has few reasons to be a stand-alone movie of the same manga besides the main cast. Both are sometimes incredibly trippy and heady with the hypnotic 90s look, which seem to be much fewer in the modern anime but I haven't really kept up with new stuff these days as well as animation styles certainly evolve over time.