Watch How I Met Your Mother Season 6 Episode 19 online via TV Fanatic with over 8 options to watch the How I Met Your Mother S6E19 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Hulu Plus, Amazon Prime, and Verizon On Demand.
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John Lithgow guest stars on How I Met Your Mother this week. He plays the major role of Barney's father.