Season 5 Episode 9 The Ornithophobia Diffusion

Big Bang Theory Season 5 Episode 9 "The Ornithophobia Diffusion" Promo

CBS has released their first first promo video for The Big Bang Theory season 5 episode 9 "The Ornithophobia Diffusion" - airing this Thursday.

In the episode Leonard and Penny try hanging out alone while Sheldon must overcome his fear of birds.