Stephen Colbert hosts the finale of “The Late Show” on CBS after 11 years on the air. In the closing episode, Colbert shifts from his usual monologue style to a more intimate presentation, speaking from behind his desk as he reflects on hosting and thanking the show’s staff. Multiple outlets report that the final guest is Paul McCartney, who appears for the last interview and also performs. Coverage describes a musical farewell in which McCartney sings “Hello, Goodbye” alongside Colbert. Several reports link the moment to McCartney’s history at the Ed Sullivan Theater, noting that the Beatles performed there in 1964 and that McCartney returns to the same venue decades later. Other sources add that the final episode features surprise celebrity cameos and moments, though McCartney is consistently identified as the last major appearance. Colbert’s broadcast bow marks the end of the late-night series, with the episode concluding in a ceremonial closing at the Ed Sullivan Theater, including lights-out participation involving McCartney.