Finale of the Day: Immortal Stephen Colbert Sings Farewell with Literally Everyone

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"The Colbert Report" aired its finale episode Thursday night, and after killing the Grim Reaper to become immortal, Colbert closed the show with a little sing-a-long.

And by little we mean an epic, over-the-top, celebrity-packed number deserving of the departing host.

Here he is performing "We'll Meet Again" with a slew of his pals in entertainment and politics including – among many others – Jon Stewart, Willie Nelson, Neil DeGrasse Tyson, Tom Brokaw, New York City mayor Bill DeBlasio, Cyndi Lauper, Bryan Cranston, Big Bird, James Franco, Michael Stipe, Barry Manilow, Christiane Amanpour, Andy Cohen, and Patrick Stewart.

And of course we all know when we will actually meet him again, as Colbert will be taking over the "Late Show" for David Letterman in 2015.

"I'm ending The Report and I was gonna say goodbye, but now that I'll live forever, who knows," he said.

At the end he took off in Santa's sleigh with Abraham Lincoln and Alex Trebek, because… why not?

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