Dan has made a career out of good-natured charm. He’s on Sirius XM multiple days a week, shooting the breeze with Big Jay Oakerson on “The Bonfire.” He plays “Mafee” on the Showtime hit “Billions.” And his roots are in stand-up, where he brings his easygoing style to fans all around the country. Check out his second DC Improv headlining weekend this fall.