The Bureau of Labor Statistics has a chart out with almost every major profession in the U.S. and salary info for each one. It is very interesting.
The lowest paying job in the U.S. - Fast Food Cook.
The highest paying job in the U.S. - Surgeons
These don't mean much, of course, because the salary ranges for each of those positions aren't very large. There just aren't any highly paid fast food workers, and very few low-paid surgeons. Other occupations, like lawyers for instance, can have pay that varies quite widely.
This also, I believe, is salary only. Stock options and other such non-salary bonuses are not figured... I think.
Anyway, if you ever wondered what career you might take up next, maybe this is a decent place to start.