In the present, murders are solved not by investigations, but by memories. Using the removed brain of a victim, the members of Forensic Investigation Office Section Nine examine the person's last thoughts to determine a suspect and motive in the case. Many oppose the violation of their loved ones' private and personal memories; but what they don't understand is that behind the scenes, even the investigators themselves are often conflicted with their deeds. Aoki Ikko is one such man who struggles to overcome his own mental doubts about his profession, while trying his best to take down those responsible for the crimes.
After discovering an element on the moon that, when used to create a nuclear reaction, would power the Earth for the next 1,000 years, the leaders of sixteen countries declared that their space programs would be combined into the International Space Agency (ISA) – and fifteen nuclear reactors would be built on the moon by the year 2023. Lostman and Goro are two young climbers who have conquered the highest point on Earth – Mt. Everest – and now look to the skies for their next challenge: to become astronauts and explore the stars. While Goro becomes a construction specialist, Lostman joins the air force; both will work their hardest to make their way into space, by whatever means necessary.
Though Moonlight Mile and Himitsu would seem to have little in common at first glance, well... maybe they don't. Regardless, call this one a gut feeling: the drama, sci fi and intelligent moments make both of these a good fit for each other. They easily would appeal to the same audiences.
In the year 2024, Ernest Serano was kidnapped and ransomed; the event was known as the Laughing Man incident due to the involvement of a world-class hacker of the same name. Six years later, the police force Section 9 finds itself in the midst of a terrorist plot and conspiracy unlike anything they've ever known. The Laughing Man - with the ability to hack into even the eyes of those around him - has returned, and his motives are unclear. The Major, Batou, and the rest of Section 9 must race against the clock to determine the reason for the Laughing Man's re-emergence and unravel the twisted conspiracy of major corporations around them...
Note: I am recommending Laughing Man because I haven't seen the full SAC S1 series - LM is a condensed version, so the rec should apply to SAC S1 as well.
Both GITS: SAC and Himitsu have a very similar feel. Each is a dramatic yet slow sci fi anime focused on the workings of the mind - whether a detached brain or a cybernetic one. I would not recommend the GITS movies for Himitsu - this pair specifically works because of the slow and wordy feel of GITS: SAC.