Since the early 80s, David Letterman has been the cooler of your American late nite television options, a recent injection of political anger has old time fans pleased with what has felt like a return to form. For people not clear on what that form was, here's a handy archive of clips from when Dave was a bit more pointed than he's been in later years:

DDY's Late Show with David Letterman Fan Page

And here are three clips from YouTube featuring some of his more interesting moments:

A Harvey Pekar interveiw

Tube'd by wdiagw

The Crispin Glover interveiw

Tube'd by venton

Beastie Boys -- Check it Out Live

Tube'd by sqrachmasda