I would recommend not showing him the Ghost in the Shell movie. (haven't seen the series, so I can't comment on it.)
When Samurai 7 comes out in the US, I think it'll be pretty good. It's an anime remake of the famous Seven Samurai. This version, though, is a bit slower-paced, a lot more steampunk, and, alas, lacks the inestimable Toshiro Mifune. The fight choreography seems like it's pretty good, too. I've seen four episodes of it (out of 26), and I'm pretty sure I'll pick up the set when it comes out. (It's by Gonzo, so it looks quite impressive.)