Even as a kid I loved Barry Sanders --not just for the obvious reasons. He would just make people look stupid trying to tackle him at times, just these ridiculous plays, and respectfully hand the ball to the ref. And that got me thinking, even as a young whippersnapper, that modesty on the field speaks volumes. Barry's humility demonstrated his confidence. Contrasted with Deon Sanders, who always struck me as insecure. In a big way Barry formed my understanding of ethics in competition.
Calvin Johnson seems like a great guy; did some cool public health stuff in college.
I've also got to give props to Nnamdi Asomugha. I know his sister pretty well and they have a great, respectful, and charitable family.