‘Stuart Saves the Universe’ Producers on Pulling Off Such a Crazy ‘Big Bang Theory’ Spinoff After ‘No One Really Liked the Idea’

As his megahit CBS sitcom “The Big Bang Theory” prepared to end its run, Chuck Lorre came up with a wild pitch for a spinoff. Not “Young Sheldon” — that prequel was already, on the air and doing gangbusters. No, Lorre had something even more fantastical in mind. “I had a strange idea that there…