Stuart Fails to Save the Universe Cast REACTS to Big Bang Theory CAMEOS and SHOCKERS (Exclusive) // TRAIN BRAIN

Stuart Fails to Save the Universe Cast REACTS to Big Bang Theory CAMEOS and SHOCKERS (Exclusive)

'Stuart Fails to Save the Universe' creator Chuck Lorre and stars Kevin Sussman, John Ross Bowie, Lauren Lapkus and Brian Posehn chat with ET's Cassie DiLaura about some of the most shocking cameos from their former 'The Big Bang Theory' castmates. From Kaley Cuoco's Penny to Kunal Nayyar's Raj Koothrappali, the show is full of familiar faces, but John also reveals which Oscar-winning 'Big Bang' guest star he hopes will show up in this new show, dropping Thursdays on HBO Max.
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