This piece is obviously by an Obama supporter- if not obvious throughout, certainly so at the end. But it does show us a couple of things:
1. The attacks on Obama show how credible insiders think he is as a candidate. They are playing politics the way it is played in contemporary America- attack and drive up the opponents negatives.
2. He has positions on issues that are developed and thought out. This clip shows a discussion of his position on a war in Iraq before the invasion, and a discussion of his health care proposal (which would likely be a premier issue were it not for the war in Iraq).
So... this is a campaign/propaganda piece, but still retains value.