YouTube's biggest gaming star (who also happens to be YouTube's biggest channel, period) PewDiePie, whose real name is Felix Kjellberg, will be appearing on The Late Show With Stephen Colbert tonight.
We have no idea what they'll talk about, but we expect that it'll be full of geeky topics. PewDiePie will also be performing some sort of "demonstration," GameSpot reports.
PewDiePie has close to 40 million subscribers on his YouTube channel and quickly rose to fame on the platform for his "Let's Play" series of videos. He set a new world record last month.
Other guests include John Kerry, the United States Secretary of State, and Homeland's Claire Danes. The show will be on at 11:35PM EDT on CBS.
Sean Murray, the creator of the upcoming No Man's Sky will be appearing on the show tomorrow.
