The Second Column is a weekly comedy podcast that features four improvisational actors who trade stories and jokes with their favorite comics, actors, writers and musicians in Los Angeles. Guests include Matt Walsh (Upright Citizens Brigade), Eddie Pepitone ("The Sarah Silverman Program"), Amy Rhodes ("Ellen"), Jen Kirkman ("Chelsea Lately"), John Ross Bowie (Big Bang Theory), Sean Conroy ("Late Night with Conan O'Brien"), Rasika Mathur ("Wild 'N Out"), Neil Campbell (Upright Citizens Brigade LA artistic director) and stand-up comics Ed Galvez and Asterios Kokkinos, among many others. The show is driven by its cast - Michael Costantini, Joe Donatelli, Carlos Jaime and Sean Kearney. The longtime friends and improvisers have a chemistry that makes each episode fun for that week's guest - and the audience. The Second Column podcast launched on Sept. 15, 2007. It was the first podcast on the Internet. (No, it wasn't.)