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How I Met Your Mother/Mosbius Designs
From The TV IV
| Mosbius Designs | |
| Season 4, Episode 20 | |
| Airdate | April 13, 2009 |
| Production Number | 4ALH20 |
| Written by | Kourtney Kang |
| Directed by | Pamela Fryman |
| Stream | ![]() |
| ← 4x19 Murtaugh |
4x21 → The Three Days Rule |
| How I Met Your Mother — Season Four | |
| |
This article about an episode needs to be expanded with more information. Please help out by editing it. |
Mosbius Designs is the twentieth episode of the fourth season of How I Met Your Mother, and the eighty-fourth episode overall.
Starring: Josh Radnor (Ted Mosby), Jason Segel (Marshall Eriksen), Cobie Smulders (Robin Scherbatsky)
with Neil Patrick Harris (Barney Stinson)
and Alyson Hannigan (Lily Aldrin)
Guest Starring: Ryan Sypek (PJ)
Co-Starring: Bo Barrett (Guy 2), Edward Flores (Food Guy), Stephen Holland (Creepy Back Rub Guy), Darren O'Hare (Guy 1), Adrian Rice (Fantasy Guy), Joel Spence (Toy Guy)
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