Ever since Johnny Carson first popularized the late-night talk show in 1962 with The Tonight Show, the eleven p.m. to two a.m. comedy time slot on network television has remained an indelible part of our national culture. More than six popular late-night shows air every night of the week, and with recent major shake-ups in the industry, late-night television has never been more relevant to our public consciousness than it is today. Jon Macks, a veteran...