Why, it's almost as if the Obama campaign shared my annoyance with the ridiculous "John McCain is running the sleaziest, most dishonorable campaign in All Of World History" line that was going around, and decided to come up with the sleaziest, most dishonest anti-McCain ad imaginable, just to shut the scolds in the liberal commentariat up:
Do I think this ad renders Barack Obama a filthy liar who's unfit to hold the highest office in the land? No: I think it makes him a pretty typical politician who wants to win a tough election and doesn't scruple all that much about stretching the truth to the breaking point and beyond. Just like John McCain.
See also Megan McArdle on this subject.