Stephen Colbert’s ‘Late Show’ finale sets a weeknight ratings record

By Brian Stelter, CNN (CNN) — “The Late Show with Stephen Colbert” went out on a literal high note. Thursday night’s series finale was the most-watched weeknight episode of Colbert’s eleven-year tenure on the show, according to overnight Nielsen ratings. Colbert and co. averaged 6.a74 million viewers, even beating his first episode as host back