BOLOS!
Check out this link, its about one of my favorite sci-fi series about the developement of "thinking tanks"
http://users.stargate.net/~whkeith/htm/bolo.htm
http://users.stargate.net/~whkeith/jpg/boloscn1.jpg
I really wish I could get the image up but for years i have yet to accomplish that here at FR....one of these days maybe somebody can make it a bit easier to post an image?