Showtime has renewed Queer as Folk for a fifth season... Disney's Elton John-scored pop musical Aida will end its Broadway run on Sept. 5 after four-and-a-half years and 1852 performances... Ratings for last Friday's controversial Nightline telecast, in which Ted Koppel read the names of 721 American soldiers killed during the Iraq war, were up 22 percent from the previous Friday.