Michael Schneider Variety Editor at Large Late night was back in full force on Monday night, and the hosts of “The Late Show with Stephen Colbert,” “The Tonight Show Starring Jimmy Fallon,” “Jimmy Kimmel Live” and “Late Night with Seth Meyers” were all expected to have something to say about it in their opening monologues. “It feels good to be back,” Colbert said at the start of his October 2 monologue — his first since May 1, the last evening before the WGA strike commenced the following day. “It feels good to be with all of you again here in the Ed Sullivan Theatre.