In case you missed 'em over the weekend, C-Span has posted the video of several broadcasts about political humor. It's a little over three and a half hours and it includes on its various panels, Garry Trudeau, Stephen Colbert, Phil Hendrie, Drew Carey, Greg Proops and others. Here's the link and it should be there for about two months. (If that doesn't work, use their search function and look for "Trudeau.")