Watch How I Met Your Mother Season 4 Episode 24 online via TV Fanatic with over 7 options to watch the How I Met Your Mother S4E24 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Hulu Plus, and Verizon On Demand.
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It's Ted's 31st birthday; Barney gets ready to profess his love to Robin; and Marshall wants to take the leap.