Stephen Colbert’s Late Show finale was a bittersweet, star-packed goodbye (opens in new tab)

Paul McCartney, Elvis Costello, Bryan Cranston and Tig Notaro were among the guests to see off both host and talk show in an 80-minute finaleSeries finales for late night shows are, by their nature, a little odd and also exceedingly rare; usually it’s the host’s final episode, and not the entire show’s, as franchises like The Tonight Show or Late Night continue on with someone new at the wheel. But CBS made the, ah, the talk show it created in 1993 as a new home for David Letterman after he f...