Stephen Colbert and David Letterman blew off some network steam and smashed some network stuff last night in a funny and oddly poignant call-back to one of Letterman’s signature late-night bits: Throwing things from the roof of the Ed Sullivan Theater.

One week before 'The Late Show' signs off for good, David Letterman returned to the Ed Sullivan Theater to help Stephen Colbert say goodbye…with a little chaos. On Thursday night’s episode, the

Stephen Colbert took over as host of "The Late Show" in 2015.