President Obama will be a guest on the final week of The Colbert Report

We’re down to the final week of shows for Stephen Colbert’s masterful Colbert Report, but the soon-to-be-Late Night host isn’t leaving his post at Comedy Central without bring out some of the heaviest hitters he can.

United States President Barack Obama will be Colbert’s guest on The Colbert Report tonight, Monday, December 8th. It’s not a long trip for the President; Colbert is taping his show just across town, at George Washington University.

(And it’s a fairly big day for the President, too–he welcomed Prince William back to the United States in the Oval Office this morning. Or it’s actually a really light day for the President; take your pick.)

The President has been a guest on The Colbert Report twice before: the first came when he was still a Senator; the second was in 2009, during the first year of his first term.

Nonetheless, Colbert was stoked to have the Commander-in-Chief back.

“Nation, I cannot overstate how huge this is,” he said, when announcing the President’s imminent arrival last week. ““The size of the hugeness? Large. I am so honored to be sitting down with the man who sat down with Bill O’ Reilly.”

The Washington taping is a special episode for the show, one Colbert is calling “Stephen Colbert Presents: Mr. Colbert Goes to Washington D.C. Ya Later, Legislator; Partisan is Such Sweet Sorrow: A Colbert Victory Lap.”

The Colbert Report wraps on December 18. Colbert will take over Mr. David Letterman’s television program in early 2015.