PENNY'S EX-BOYFRIEND, ZACK, ASKS LEONARD FOR A HUGE FAVOR, ON "THE BIG BANG THEORY," THURSDAY, JAN. 10
Brian Thomas Smith Returns as Penny's Ex-Boyfriend, Zack
"The Propagation Proposition" - Penny's ex-boyfriend, Zack (Brian Thomas Smith) , and his wife want a baby, but when Zack is infertile, they ask Leonard for help. Also, Koothrappali attempts to mend things with his ex-fiancée, Anu (Rait Gupta) , on THE BIG BANG THEORY, Thursday, Jan. 10 (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:
Brian George
(Dr. Koothrappali)
Brian Thomas Smith
(Zack)
Rati Gupta
(Anu)
Lindsey Kraft
(Marissa)
GUEST CAST:
Shay Ali
(Greg)
Chip Chinery
(Bob)
STORY BY: Chuck Lorre, Steve Holland, Jeremy Howe
TELEPLAY BY: Maria Ferrari, Dave Goetsch, Eric Kaplan
DIRECTED BY: Mark Cendrowski
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