I think this weekend's Wait Wait, Don't Tell Me! was one of the funniest in a while. I should know, having listened to about 10 weeks worth of podcasts of the show over the past two afternoons.
Just trust me--go here and listen. It's 47 minutes well worth spending! If you don't have the full 47 minutes to spare, I recommend especially the Not My Job segment and the second Who's Carl This Time? segment. I laughed out loud, a lot, which sort of hurt where my stitches pull but I couldn't help it. :-)