The Big Bang Theory The Contractual Obligation Implementation (Season 6, Episode 18)
TV-14
TV Episode | 20 min | Comedy, Romance

Primary photo for The Contractual Obligation Implementation

The Big Bang Theory

The Contractual Obligation Implementation (Season 6, Episode 18)

TV-14

TV Episode | 20 min | Comedy, Romance

Leonard, Sheldon and Howard give lectures on science to junior high students. The girls ditch work to go to Disneyland. Raj devises a date for Lucy that fixes their social anxiety problems.

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Cast	+ Add Cast
14 cast members

Name	Known for
Johnny Galecki Leonard Hofstadter Leonard Hofstadter See fewer	The Big Bang Theory (2007)
Jim Parsons Sheldon Cooper Sheldon Cooper See fewer	The Big Bang Theory (2007)
Kaley Cuoco Penny Penny See fewer	The Big Bang Theory (2007)
Simon Helberg Howard Wolowitz Howard Wolowitz See fewer	Florence Foster Jenkins (2016)
Kunal Nayyar Raj Koothrappali Raj Koothrappali See fewer	The Big Bang Theory (2007)
Mayim Bialik Amy Farrah Fowler Amy Farrah Fowler See fewer	Beaches (1988)
Melissa Rauch Bernadette Rostenkowski Bernadette Rostenkowski See fewer	The Big Bang Theory (2007)
Kate Micucci Lucy Lucy See fewer	When in Rome (2010)
Brian Posehn Bert Kibbler Bert Kibbler See fewer	Run Ronnie Run (2002)
Piper Mackenzie Harris Girl #1 Girl #1 See fewer	R.I.P.D. (2013)
Diamond White Girl #2 Girl #2 See fewer	The Lion Guard (2015)
Dawson Fletcher Justin Justin See fewer	The Wonder Years (2021)
Seaonna Chanadet Eye Rolling Girl Student (uncredited) Eye Rolling Girl Student (uncredited) See fewer	Bad Teacher (2014)
Bryan Stamp Library Graduate Student (uncredited) Library Graduate Student (uncredited) See fewer	Fear and Loathing in Ghost Vegas (2016)