Paul McCartney completed a full circle on the finale of "The Late Show," by visiting the scene of the Beatles' historic TV performance in 1964.

The special guests on the final 'Late Show with Stephen Colbert' included a Beatle, Jon Stewart, Ryan Reynolds, Tig Notaro, Paul Rudd and more.

The reveal came after Colbert first addressed the audience in a more intimate style than his typical monologue, leaning on his desk as he spoke about the joy hosting The Late Show…