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The Big Bang Theory

S10-E19 The Collaboration Fluctuation

S10-E19 The Collaboration Fluctuation

Catch Up


Friends in unfamiliar situations is the theme of tonight’s boffcom bulletin. Leonard feels put out when his new lodger Raj monopolises Penny with facials and related activities, so he hangs out with new parents Howard and Bernie.

Sheldon, meanwhile, realises a project that his neurobiologist fiancée Amy has been working on has implications in his own field, and embarks on a collaborative enterprise. While setting out some ground rules, they discover that being critical of each other actually helps their thought processes. Surely that will make Sheldon insufferable? Sorry, more insufferable..?


Penny begins to get along so well with new housemate Raj that Leonard starts to feel left out. Sheldon expresses an interest in Amy's work.

Cast & Crew

Leonard Hofstadter Johnny Galecki
Sheldon Cooper Jim Parsons
Penny Kaley Cuoco
Howard Wolowitz Simon Helberg
Raj Koothrappali Kunal Nayyar
Amy Farrah Fowler Mayim Bialik
Bernadette Rostenkowski Melissa Rauch
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