The Big Bang Theory Season 6 Episode 18 : The Contractual Obligation Implementation

Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers; Raj plans a date with Lucy.

NameThe Big Bang Theory Season 6 : The Contractual Obligation Implementation
Air DateMarch 7th, 2013
GenreComedy
NetworkCBS
Production CompaniesChuck Lorre Productions, Warner Bros. Television
DirectorMark Cendrowski
Guest StarsKate Micucci, Brian Posehn, Piper Mackenzie Harris, Diamond White, Dawson Fletcher
Plot Keywordsnerd, geek, friends, scientist, science, sitcom
Kaley Cuoco
Kaley Cuoco
Penny
Johnny Galecki
Johnny Galecki
Leonard Hofstadter
Jim Parsons
Jim Parsons
Sheldon Cooper
Simon Helberg
Simon Helberg
Howard Wolowitz
Melissa Rauch
Melissa Rauch
Bernadette Rostenkowski
Kunal Nayyar
Kunal Nayyar
Rajesh Koothrappali
Mayim Bialik
Mayim Bialik
Amy Farrah Fowler

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