Kunal Nayyar Photo

From: Photo Flash: THE BIG BANG THEORY's 'The Contractual Obligation Implementation'

On THE BIG BANG THEORY's upcoming episode, titled 'The Contractual Obligation Implementation,' Leonard, Sheldon and Wolowitz speak to junior high girls about careers in science. Meanwhile, Koothrappali plans a date with Lucy, on Thursday, March 7 (8:00 - 8:31 PM, ET/PT) on CBS.