Arianna Huffington will appear as herself on a future episode of How I Met Your Mother. It will air on May 10.

In "Of Course", Robin consults a self-help guru to help resolve her anger towards Barney, mostly based on his behavior during their break-up. Read our recap to find out what happened!

Jennifer Lopez guest stars on the next new episode of How I Met Your Mother. Check out a few photos of her as Anita right now.

In "Hooked", Carrie Underwood guest stars as Tiffany - a girl that has Ted hooked. The gang get together to discuss this and their own hooked situations. Read our recap to find out what you missed!

A former couple will attempt to reunite on How I Met Your Mother. Who do you think it will be?

Jennifer Lopez guest stars as a character on How I Met Your Mother. She's seen with Barney in this photo.

Carrie Underwood guest stars on the next new episode of How I Met Your Mother. Get an early look at her in the role of Tiffany now.

In "Rabbit or Duck", Marshall and Lily set up Ted with one of Barney's discards this week. While Robin is invited to a party by her co-worker Don.

A Round Table discussion of various, crucial topics from last night's How I Met Your Mother, "The Perfect Week." See if you agree with our staff members' take!

This week's episode is titled "The Perfect Week." During it, Barney is encouraged to date seven girls in seven days - creating the "Perfect Week". Jim Nantz and Nick Swisher guest star.

Jennifer Lopez is coming to How I Met Your Mother. Is this a good thing, fans?

Brooke Nevin will guest star on March on How I Met Your Mother. No, she won't be playing the mother.

Carrie Underwood on How I Met Your Mother? That's, like, as awesome as Rachel Bilson on How I Met Your Mother!

Our staff's review of last night's How I Met Your Mother focuses on reachers, settlers and people named Jenkins.

When Lily refuses to believe that Jenkins, Marshall's attractive female colleague, kissed him, Marshall insists Jenkins tell Lily what really happened.

"Girls vs. Suits" was last night's episode of How I Met Your Mother, and the show's 100th. Here's our panel's Round Table discussion.

Barney has to give up suits to land a hot bartender, Karina (Stacy Keibler), which leads to a musical number for the 100th episode.

Carrie Underwood is coming to How I Met Your Mother this spring. How awesome is that!

The producers of How I Met Your Mother tease us on what we can expect in the coming year - particularly with the mother storyline.

Rachel Bilson guest stars on How I Met Your Mother January 11. Hopefully she stays around beyond that!

The cast and producers of How I Met Your Mother plan a musical extravaganza for the show's 100th episode. Are you psyched yet?

On "Last Cigarette Ever," the How I Met Your Mother characters tried to quit smoking. The results were mixed at best.

Find out how the How I Met Your Mother gang quit smoking our in review of "Last Cigarette Ever."

Nick Swisher will soon take a swing at acting. The outfielder is booked for an appearance on How I Met Your Mother.