How I Met Your MotherSiran BabayanDecember 31, 2009 Cast and crew, including Josh Radnor, Jason Segel, Neil Patrick Harris, Cobie Smulders and Alyson Hannigan, celebrate 100 episodes. Thu., Jan. 7, 6:30 p.m., 2010 Share this:TwitterFacebookLinkedInRedditMorePinterestPocketTelegramWhatsApp