Conan O’Brien. Photo: Rich Polk/Penske Media via Getty Images Host Conan O’Brien missed his cue to take the Oscars stage to perform his opening monologue. He needed a few seconds, it seems, to climb out of Demi Moore’s back à la The Substance . When he eventually did hit the stage, though, he jumped straight into a series of jokes about the year in film in classic awards-show host fashion. Broadly, the jokes were solid. Of The Brutalist , he joked “I didn’t want it to end, and luckily, it didn’