The Big Bang Theory

The Hamburger Postulate

Series 1 - Episode 5 The Hamburger Postulate



Leonard fears he is wasting his time with Penny and ends up spending the night with fellow scientist Leslie. However, he is disappointed when she later tells him she was only interested in a one-night stand. Meanwhile, Sheldon frets over a change to his hamburger routine. Starring Johnny Galecki, Kaley Cuoco and Jim Parsons.

Cast & Crew

Leonard Hofstadter Johnny Galecki
Penny Kaley Cuoco
Sheldon Cooper Jim Parsons
Leslie Winkle Sara Gilbert
Howard Wolowitz Simon Helberg
Raj Koothrappali Kunal Nayyar
Director Andrew D Weyman
Writer Dave Goetsch
Writer Steven Molaro
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