7-minute Hardball segment with Chris Matthews, November '07

Clueless young alarmist Jessy Tolkan takes on climate realist Pat Buchanan here (upper right portion of your screen; 15 second ad may run first).

I found this video to be quite entertaining; Tolkan actually says "it's so horrible you can't deny it right now", while Buchanan repeatedly pointed out that while people will give lip service to the idea of catastrophic AGW, deep down most people don't actually believe in it.