This will sound like a bit but it’s not: John Mulaney, one of the most famous and talented stand-up comedians working right now, has joined Late Night with Seth Meyers as a staff writer. The news was announced last night by Late Night EP Mike Shoemaker and was confirmed by NBCUniversal, as Mulaney appeared on the show last night to talk to Seth about the role ghosts played in the recent presidential election. The news isn’t actually all that surprising. Mulaney and Meyers worked together closely for years at SNL where Meyers was head writer and Mulaney …