Did You Catch The Very Famous Extra On Tonight’s How I Met Your Mother?

If you blinked, you might have missed it: Conan O’Brien was on tonight’s episode of How I Met Your Mother. In what surely ranks as one of the briefest celebrity cameos in small-screen history, O’Brien could be seen hanging out at MacLaren’s Pub duri…

  Your Reaction?

    Starting soon, you'll only be able to post a comment on BuzzFeed using a Facebook account or via our app. If you have questions or thoughts, email us here.

    Hot Buzz

    This All-In-One Baby Food Maker Will Change Your Life

    This Is What The Night King From "Game Of Thrones" Looks Like In Real Life

    Now Buzzing