Obama's race is irrelevant, he is a very charismatic and thoughtful candidate. He seems to have the spark of greatness to him which I think is what makes this good enough to cross to hacker news. A lot of successful entrepreneurs also have great charisma.
If Obama matters to you, you'd better start thinking about his race, since it's been his obsession for decades.
Edit: and don't forget his scary church: http://www.tucc.org/about.htm . It's as bad as Romney's church was thirty years ago.
Have you ever been a minority anywhere? I only lived in Japan for about a year, but I was very aware of how differently I was perceived as the tall white guy. I don't see how you can grow up black in the U.S.A. and not have that be a fundamental part of shaping your experience, especially when you consider the racial history here. Add to that his white mother and time living outside the U.S., that is a lot of influences to assimilate.
I'm not sure what your point about the church is. Yes, it is very pro-black and pro-African, but I don't see anything that is explicitly "anti" anyone else.
Would be interested to see the welcome for a white person walking in on Sunday, though. :) Having said that, I did go to a church once where ours was the only white family among black Haitian immigrants. And that was a pretty cool experience.