In 2026, it’s almost too easy to dismiss The Big Bang Theory. Those shows, like The Big Bang Theory, have their own legacies, both good and bad, but are ultimately comedy time capsules of their era. Read more:Enter Stuart, who was a side character at best in The Big Bang Theory. Stuart Fails to Save the Universe premieres on HBO Max in the UK on Friday 24 July 2026. Add Stuart Fails to Save the Universe to your watchlist on the Radio Times: What to Watch app – download now for daily TV recommendations, features and more.