I like Ghost in the Shell, as well as the other mangas from Shirow. It has some nice ideas, especially the ghosting which I used a few times myself (in Shadowrun tho). Never done any convertions of the tech as Shadowrun has enough tech IMO.
Now the world is less punkish than cpunk settings in general so could be hard to play a character on the wrong side of the law. On the other hand, could have an interesting campaign where the players play cops, gmen or corp security. Just don?t know how it would play out as there are certain complications, the main issue being that you have rules to follow, or at least pretend to as a cop/gman/corp.