Einstein has been the subject of or inspiration for many novels, films and plays, such as Steve Martin's comedic play Picasso at the Lapin Agile.[17] He was the subject of Philip Glass's 1976 opera Einstein on the Beach,[18] and his humorous side is the subject of Ed Metzger's one-man play Albert Einstein: The Practical Bohemian.[19] He features prominently in Daniel Kehlmann's play about Kurt Gödel, Ghosts in Princeton (2011).[20]