Episode Titles: Clean
You are viewing a list of 1 The Big Bang Theory episode featuring "Clean" in their title.
Season 8, Episode 11 - The Clean Room Infiltration
Aired December 11, 2014
Leonard and Howard are performing an experiment in the university clean room, but when they accidentally let a bird in they need Raj's help. Meanwhile, as Amy hosts an authentic Victorian Christmas party, Sheldon resents her forcing him to celebrate the holidays and shops for the perfect gift to ruin Christmas.