We use cookies to improve your experience of our website. Cookies perform functions like recognising you each time you visit and delivering advertising messages that are relevant to you. Read more here

The Big Bang Theory

S3-E15 The Large Hadron Collision

S3-E15 The Large Hadron Collision



Leonard is invited to visit the Large Hadron Collider in Switzerland and asks Penny to join him as a Valentine's Day treat. However, Sheldon tries to persuade the couple to allow him to take her place.

Cast & Crew

Leonard Hofstadter Johnny Galecki
Sheldon Cooper Jim Parsons
Penny Kaley Cuoco
Howard Wolowitz Simon Helberg
Raj Koothrappali Kunal Nayyar
Restaurant patron Erin Pickett
Director Mark Cendrowski
Writer Maria Ferrari
Writer Jim Reynolds
see more


Have Your Say What did you think of The Large Hadron Collision?

view all comments (0)