Garry Trudeau's Favorite Doonesbury Strips

Doonesbury turned 40 on October 26, a milestone Rolling Stone marks in its current issue with an interview between Garry Trudeau and the graphic designer Chip Kidd. We asked Trudeau to name a few of his favorites from among the 14,000 individual strips he's drawn during his run, and he came up with the following picks, along with his thoughts on what makes them stand out.