Plot: Leonard keeps an affair a secret from Sheldon, Howard and Raj.
Cast
Johnny GaleckiLeonard HofstadterJohnny Galecki was 35 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Wed, Apr 30 1975
Jim ParsonsSheldon CooperJim Parsons was 37 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Sat, Mar 24 1973
Kaley CuocoPennyKaley Cuoco was 24 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Sat, Nov 30 1985
Simon HelbergHoward WolowitzSimon Helberg was 29 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Tue, Dec 09 1980
Kunal NayyarRajesh KoothrappaliKunal Nayyar was 29 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Thu, Apr 30 1981
Melissa RauchBernadette RostenkowskiMelissa Rauch was 30 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Mon, Jun 23 1980
Mayim BialikAmy Farrah FowlerMayim Bialik was 34 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Fri, Dec 12 1975
Aarti MannPriya KoothrappaliAarti Mann was 32 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Fri, Mar 03 1978
Crew
Mark CendrowskiDirectorMark Cendrowski was >> in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Unknown Birthday
Steven MolaroStory, Co-Executive ProducerSteven Molaro was >> in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Unknown Birthday
Chuck LorreStoryChuck Lorre was 58 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Sat, Oct 18 1952
Bill PradyTeleplayBill Prady was 50 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Tue, Jun 07 1960
Lee AronsohnStoryLee Aronsohn was 57 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Mon, Dec 15 1952
Eric KaplanTeleplayEric Kaplan was 39 in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Fri, Sep 10 1971
Maria FerrariTeleplayMaria Ferrari was >> in The Big Bang Theory - Season 4 - The Irish Pub Formulation (Episode 6).
Birthday: Unknown Birthday