'Big Bang Theory' Spinoff: Everything We Know About 'Young Sheldon' Video:

ET sat down with Laurie Metcalf, who plays Sheldon's mom on 'Big Bang.' The actress' real-life daughter is set to play a younger version of Mary Cooper to Iain Armitage's Sheldon on the spinoff.

Published Fri, 05 May 2017 01:17:49 UTC

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