SHELDON GETS QUITE A SURPRISE WHEN HE VISITS HIS MOM IN HOUSTON, ON "THE BIG BANG THEORY" THURSDAY, MARCH 13

"The Mommy Observation" - When Sheldon visits his Mom in Houston, he is forced to confront a new reality. Meanwhile, Raj's 'Murder Mystery' party starts some fights within the gang, on THE BIG BANG THEORY, Thursday, March 13 (8:00 - 8:31 PM, ET/PT) on the CBS Television Network.

CAST:

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

RECURRING CAST:

Laurie Metcalf (Mary)
Kevin Sussman (Stuart)

STORY BY: Jim Reynolds & Steve Holland & Maria Ferrari

TELEPLAY BY: Steven Molaro & Eric Kaplan & Anthony Del Broccolo

DIRECTED BY: Mark Cendrowski

RATING: To Be Announced