One of the most important things that will tell the difference between the heroes and super stars is tell them that you want them to comment their non-obvious code.

If they can't or refuse to comment code, no matter how profanely they do it, the person is probably not a good team player.

I have seen comments along the lines of:

But it is an idea of the logic and why they did the following code.

Then there is the opposite incentive for your rock stars -- make sure there is a non-managerial path for your rock stars that does involve more money or prestige, but doesn't involve managing people on a permanent basis. Even during my interview I told them I can do team projects or help train newbies, but I don't want to manage people on a regular basis. If, during the interview, they had said they eventually saw me managing wetware, that would have done it for me. I would have passed on the job.

I don't mind reporting to a manager that is not really technically savvy but she can learn. But she also doesn't sit over my shoulder either. She gives me a job and walks away.