Season 1 Episode 4: The Luminous Fish Effect

 Laurie Metcalf and Jim Parnsons

Leonard, Sheldon's Mother and Sheldon

The Big Bang Theory Season 1 Episode 4 "The Luminous Fish Effect" aired 15 October 2007. Sheldon's getting fired forces him to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.

 Sheldon's Mother and Sheldon

In this episode we also meet Sheldon's mother who is played by Laurie Metcalf. Here are som pictures of her as Sheldon's mother.

The Luminous Fish Effect