I want proof that you normally write readable code, but that you can pull the above off is impressive and I'm interested. Once in a while I need people who can

I want proof that you normally write readable code, but that you can pull the above off is impressive and I'm interested. Once in a while I need people who can work with weird problems. (More than once I've traced a production bug to something in gcc - this happens about once every 10 years on a project with 200 developers, but it happens and someone needs to be able to trace such things down)