What is it about becoming superrich that makes people so greedy—and mean? Last week Harry Potter creator (and gazillionaire) J. K. Rowling was in court trying to stop a former middle-school librarian named Steven Vander Ark from publishing a book called "The Harry Potter Lexicon." He sees it as both a guide and a tribute to the wonderful world of Potter. She thinks it's a rip-off, and a shoddy one at that. "I think there are funny things in there," Rowling told the judge, "and I wrote them." It was all enough to make a grown man cry, and Vander Ark did, on the stand. "It's been difficult," he said, "because there has been a lot of criticism, obviously, and that was never the intention." For shame, J.K. You give all the rest of us Muggles a bad name.