More than 100 victims and heroes of the Sept. 11 tragedies — including New York City fireman and rescue workers — were treated to a special taping of NBC's Friends last month in Los Angeles, TV Guide Online has learned. The audience also included widows and fiancées of late Cantor Fitzgerald employees (the company lost 657 staffers in the World Trade Center attack). Says a source: "The taping lasted seven hours and the cast was very friendly and took time to meet and greet the audience."