J (Jason) Milligan is a freelance writer who was a credited staff writer on Sesame Street from seasons 40 through 43. Prior to that, he served as creative director and head writer for Sesame Workshop's interactive division, primarily writing and designing content and games for Sesamestreet.org, as well as for various computer games. He generally served as voice director for these projects.
Milligan also assisted Caroll Spinney in writing his autobiography The Wisdom of Big Bird. He spoke about the unique assignment in an interview: "The writing was challenging on that book because Caroll has a rather non-linear style of storytelling. It makes for great dinner conversation, but can be hard to form into chapters. But working with him was a pleasure. We’d meet every week at his favorite Italian restaurant, have some wine and risotto and he’d share his life with me, these incredible stories."