Watch How I Met Your Mother Season 6 Episode 15 online via TV Fanatic with over 5 options to watch the How I Met Your Mother S6E15 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, and Google Play.
|YouTube Purchase||Watch Now|
|Google Play||Watch Now|
Katy Perry guest stars on this episode of How I Met Your Mother. The singer comes on board as a woman who gets Barney to open up.