CBS has announced the details of the twenty-first episode of the season, "The Plimpton Stimulation", which will air May 10th.
"The Plimpton Stimulation" - Leonard and Sheldon compete for the attention of a famous female physicist, on THE BIG BANG THEORY, Monday, May 10 (9:31-10:01 PM, ET/PT) on the CBS Television Network.
Judy Greer (Arrested Development, 13 Going on 30) guest stars in this episode. You can find more information about the episode in our Episode Guide.
| Title | Date Posted | Category |
| CBS Announces Episode 4.02 | 31st August 2010 | Show |
| CBS Announces Episode 3.22 | 13th April 2010 | Show |
| CBS Announces Episode 3.20 | 30th March 2010 | Show |
| CBS Announces Episode 3.19 | 15th March 2010 | Show |
| CBS Announces Episode 3.18 | 1st March 2010 | Show |