Mike Birbiglia remembers when the room was a lot smaller. He's headlining Saturday night at the Warner Theatre, where he'll tell some stories he’s considering for inclusion in his next one-man show. But he cut his teeth at the DC Improv in the late 90s, while a student at Georgetown University. By the time he was 25, he'd done the The Late Show with David Letterman , released his first album, and had his own Comedy Central special.
