AdvertisementFrom Adman To Stand-Up: Jim Gaffigan's Transition Took A Few Good NapsJuly 19, 2015Danny HajekfacebookEmailJim Gaffigan spent years in stand-up before, finally, someone took a chance on him: that someone just happened to be David Letterman. "The weird thing is, because Letterman thought I was good, everyone changed their mind," he says. "It changed the narrative surrounding me, completely." (Courtesy of TV Land)