QualiaSoup: "Good Without Gods"
I posted the first part of this some time back, and QualiaSoup released part 2 last week. These are, in my opinion, some of the most clear, concise arguments I've ever heard regarding a rational approach to moral reasoning. Since there's been a pretty decent time gap between the release of the two videos, I've included both parts. The first part deals more with moral reasoning, while the second addresses many of the problems with theistic morality.