I was reading about the practice of young chefs routinely taking time off from work to "stage" or work at other restaurants and it occurred to me that would be a wonderful experience as a developer. It would be similar to an internship, except for working developers. It doesn't take long to come up with a list of companies I would gladly volunteer at for a month or two just for the experience.
Does anyone know of such a practice? If not, would it work? Would you do it?