 If you liked
Koukaku Kidoutai
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 ...then you might like
Roujin Z
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Both are about the combination of technology and human consciousness and body. Ryoujin Z doesn't go that deep as GITS but it is somehow similar showing how technology that was made to help people can actually be abused and can even evolve on its own into something autonomous but affected by human mind, wishes and desires.
Ryoujin Z is not as serious as GITS at the first glance but it actually gives the viewer a strange feeling that there is actually something more behind it, opening some important questions about our society just as GITS.