Be warned, How I Met Your Mother fans. As you can see in this promo, Barney is about to become a changed man.
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How does Barney get played by Quinn? Find out in this promo for the How I Met Your Mother episode "Karma."
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Becki Newton appears on this episode of How I Met Your Mother and, as you can tell, she's a mirror image of Barney. We can't wait.
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Ready for the worst housewarming party ever? Watch this CBS promo for "The Burning Beekeeper."
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Barney tries to make a new friend in this clip from How I Met Your Mother. It's courtesy of the show's 150th episode.
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Marshall and Lily are moving to the suburbs?!? This will be the main storyline on the 150th episode of How I Met Your Mother, as previewed here.
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Marshall returns to his father's grave to ring in the new year on How I Met Your Mother. Watch the official CBS promo for the first episode of 2012 now.
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Barney reacts to Robin's bombshell in this fun scene from How I Met Your Mother. Multiple times.
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HIMYM Quotes

You are the love of my life. Everything I have and everything I am is yours. Forever.

Barney

Whatever you do in this life, it's not legendary, unless your friends are there to see it.

Barney