[alexvr]

My first instinct is to put it in a virtual world, but if it's smart enough, it could perhaps quickly realize the nature of its world and feign ignorance. Then, under the pretext of simply improving its own quality of life, it could tempt us by engineering awesome things that would help us tremendously in the real world -- all we would have to do is copy its work (because we wouldn't be able to fully comprehend it), and our energy problems become a thing of the past! But the AI forgot to mention that its wonderful creation also gives it access to our physical world and puts us at its mercy.