I'd love to have a virtual clone of myself, i.e. something that has learned to think like me. I would treat it as a virtual assistant. I'd like it to prioritize and schedule my work. Tell me when it's time to call it quits or when I need to be doing something else.

Essentially, it'd be the virtual embodiment of my conscience.

Going along those lines, let's say you're a brilliant CEO or hacker. You could license copies of your wisdom to others who need guidance.