A convention held in Orlando, Florida from July 17 to 20, 2003 at one of the Walt Disney World hotels. Billed as a "Harry Potter Symposium", Nimbus 2003 was part fan convention and part academic symposium, featuring both learned lectures on philosophical issues raised by the Potter books, and more fannish stuff like a dealer room and a Quidditch match (how they plan on playing it without flying broomsticks I'm not sure). More information is on their official Web site at www.hp2003.org.
Some of the scheduled talks: