It's open, baby. It's ALWAYS open.

During the Superbowl, CBS aired a picture of Barney holding up a sign, CBS: Call Barney Stinson, only to later use the bit in the episode. Amazing!

Well, this is awkward... and hilarious. Barney is in bed with Lily and Marshall.

Neil Patrick Harris and Carrie Underwood on the set of How I Met Your Mother. What a great episode that's going to be.

Man, Barney has really let himself go. The guy needs a major diet, stat!

Go ahead and celebrate, Barney. How I Met Your Mother is 150 episodes young!

Cobie Smulders poses here as Robin. We couldn't imagine anyone else in the role, could you?

The album cover from Robin's popstar alter ego, Robin Sparkles' hit single, "Sandcastles in the Sand." Only How I Met Your Mother would release the cover for a fictional song on the show.

When will viewers meet the mother of Ted's kids? Perhaps in the show's 100th episode.

Barney has a lot to go over with his father. Like what a basketball hoop is, for example.

This is your first look at Jennifer Lopez on How I Met Your Mother. She plays a a self-help author on the sitcom.

Barney Stinson in "Robots vs. Wrestlers," from the fifth season of How I Met Your Mother. He is hilarious, every week.