Before Bo Burnham wrote and directed Eighth Grade, he was primarily known as a stand-up comedian, one who was particularly adept at writing clever songs. That background should come in handy on his next gig, as he's been tapped to write new songs for the upcoming Sesame Street movie starring Anne Hathaway. And frankly, I think he's the perfect choice. According to Deadline, which broke the news of Burnham's involvement, the film will find Big Bird and his Sesame Street friends in Manhattan, having been mysteriously expelled from their own neighborhood. Hathaway will play Sally Hawthorne, …