John Mulaney fans know the comedian is obsessed with Broadway. From a lobstrer singing Les Miz to a Cats-singing commode in a bodega bathroom (not to mention his pitch-perfect Company mockumentary and musical Sack Lunch Bunch), Mulaney always manages to work in a musical reference or three. So, when the Oh, Hello on Broadway star hosted Saturday Night Live on Leap Day, he went all out with a musical mash-up set at…
