This story is making the rounds in the airline community recently:
An American Airlines FA, close friends with one of the American FA's that was aboard one of the 911 flights, was shopping while on vacation in Toronto, Canada two years after 911. As she is waiting in line to pay for her purchase, she is shocked to see her "dead" F/A friend walk by. She hails her by name. The "dead" F/A turns, stops, and their eyes meet. The "dead" F/A runs out of the store into the crowd in the mall. The AA F/A runs after her, setting off store shoplifting sensors from the unpaid merchandise in her arms. Security detains her and the "dead" F/A blends into the crowd. The AA F/A is 100% certain of the deceased's identity...she was wearing the tennis bracelet given her as a present the previous Christmas. She attended both AA's and her family's memorial services. Weird.