SHELDON TRIES TO KEEP HIS GEOLOGY COLLABORATION WITH BERT A SECRET, ON "THE BIG BANG THEORY," THURSDAY, NOV. 9

"The Geology Methodology" - Sheldon and Bert collaborate on a research project, despite Sheldon's embarrassment. Also, Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi (Swati Kapila)
, on THE BIG BANG THEORY, Thursday, Nov. 9 (8:00-8:31 PM, ET/PT) on the CBS Television Network.

REGULAR CAST:

Johnny Galecki (Leonard)
Jim Parsons (Sheldon)
Kaley Cuoco (Penny)
Simon Helberg (Wolowitz)
Kunal Nayyar (Koothrappali)
Mayim Bialik (Amy)
Melissa Rauch (Bernadette)

RECURRING CAST:

Kevin Sussman (Stuart)
Brian Posehn (Bert)
Swati Kapila (Ruchi)

GUEST CAST:

Elka Rodriguez (Rose Lady)

STORY BY: Steve Holland, Anthony Del Broccolo, Adam Faberman

TELEPLAY BY: Eric Kaplan, Maria Ferrari, Tara Hernandez

DIRECTED BY: Mark Cendrowski