came up with the idea for the book series following the adventures of a scrawny young wizard who went by the name of Harry Potter while on a train at King's Cross Station in 1990.
last of Harry Potter books (“Harry Potter & the Deathly Hollows") released in 2007 = largest ever pre-ordered book on amazon.com and Barnes & Noble and Borders
each of Harry Potter books were adapted into movies that became box-office successes
2013, wrote crime fiction under alias “Robert Galbraith"
2013, announced release of Hogwarts textbook “Fantastic Beasts & Where to Find Them" which would also be adapted into a film