Forgive me if you've already mentioned this, but there's also a nice video of a talk and presentation he gave at this year's Technology/Entertainment/Design conference (downloadable in a variety of formats):

http://www.ted.com/tedtalks/

The first few minutes show Al Gore as a standup comic, he's pretty good at it. Then he gets serious...it's worth watching.

Another video on that site that is a must-see is Ted Rosling's amazing presentation in which he demonstrates the most incredible data visualization program I've ever seen.

The Daily Show interview is now available on the official website:

http://www.comedycentral.com/shows/the_daily_show/videos/celebrity_interviews/index.jhtml

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SUVs are squared-out minivans.