The genius is in the details, people. We all knew this episode was coming — they teased it last week, even! — but still, so funny. It's Between Two Ferns with Zach Galifianakis, and his guest is Ben Stiller. Whether you've seen it before or not is irrelevant, because you'll laugh again and again. Enjoy!

Between Two Ferns with Zach Galifianakis: Ben Stiller from Between Two Ferns