The Oscars can, believe it or not, be funny. But something about the last two ceremonies under host Jimmy Kimmel made this fact easy to forget. Thank you, then, to Conan O’Brien, whose early salvo of gags and silliness – arriving on the heels of a sensational medley of “Over the Rainbow”, “Home” and “Defying Gravity” by Wicked’s Cynthia Erivo and Ariana Grande – speedily made it the most enjoyable Oscar monologue in years.