This silly little stalker drama for the teen set finds Erika Christensen (the Julia Stiles look-alike from Traffic) playing Madison, the new girl on a high-school campus who fixes her femme-fatale eyes on the schools top jock, Bena swimming champion of all thingsplayed by Jesse Bradford (Clockstoppers, Bring It On). Under the guise of being assertive and independent and modern, Madison gets away with being a bad girl to the extreme. The character shares much in terms of overt sexuality and latent threat with Glenn Closes frizzy-haired witch in Fatal Attraction. But if you can imagine it, Swimfan is even more exploitative than that "classic." Nevertheless, it was the No. 1 movie its first weekend out, which says a lot for the slowness of the fall movie season and the lowest-common-denominator tastes of the audience. Next, please.