The Big Bang Theory: Season 4 Episode 20: The Herb Garden Germination
Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Carol Ann Susi
Length: 21 minutes
On Air Date: 18 Aug 2011
The Big Bang Theory: S04E20 Description: Sheldon and Amy secretly experiment on the gang by spreading rumors when they hear that Bernadette is thinking about breaking up with Howard.