Lily tries to comfort Barney who is enraged at the idea of Ted and Robin sleeping together again. Lily tries to get Barney to admit he still has feelings for Robin.
Added:
In this clip from the the upcoming episode of How I Met Your Mother, Robin and Ted are driving each other nuts as roommates. They think maybe have sex will solve the problem... much like Barney thinks it will solve world peace.
Added:
A preview clip of Speidi (Spencer Pratt and Heidi Montag) appearing on How I Met Your Mother on the magazine cover of "Them Weekly" that Marshall takes home to read while in the bathroom.
Added:
Kim Kardashian appears on How I Met Your Mother as the cover girl on "Them Weekly" that comes to life and gives Marshall advice. Very funny!
Added:
In this scene from "Little Minnesota," Ted thinks his sister slept with Barney and he decides to confront her on it. A great reaction from both her and Barney.
Added:
In this great clip from "Little Minnesota," Robin steals Marshall's story in order to impress the people at a local Minnesota bar. She doesn't even replace the word son with daughter.
Added:
A montage of Barney singing songs about Ted's hot sister using various holiday songs as the music. Very funny and we can't wait for the episode!
Added:
Barney and Ted, who both decided to use The Naked Man on their respective dates, compare which pose they'll use when appearing naked for their dates.
Added:

How I Met Your Mother Season 4 Quotes

Ted: Chinese [food]?
Barney: I don't like Chinese.
Ted: Indian?
Barney: I just said, I don't like Chinese.
Ted: Indian isn't Chinese.
Barney: Weird meats, funny music, side of rice. Why are we splitting hairs?
Ted: Mexican?
Barney: I just said, I don't like Chinese!

Bimbos make me happy. Bimbos make me feel alive. Bimbos make me want to pretend to be a better man. This whole thing with Robin was just a fling, but at the end of the day, my heart belongs to bimbos

Barney