I was moved by McCain's speech as well, at least what I heard of it. It was a very gracious concession.
Obama's speech also moved me, especially when he spoke of the 106-yr-old black woman who, when she came of age, couldn't vote both because of her gender and the color of her skin. So much change since then!
First of all, Obama is as white as he is black.
The thing is, that doesn't always make much of a difference. It used to be that if you had a drop of black blood in you, you were considered black, no matter how white your skin was. We've come a long way since that time.