Issues involving teens and sex occupy two programs, including an NBC TV movie about a school official sexually harassing students and a PBS special making a serious examination of pregnancy and sex education in schools.
* "The Nanny" (8 p.m.-8:30 p.m., WJZ, Channel 13) -- The old mistaken-sexual-identity plot gets a twist. Catherine Oxenberg guest- stars as a publicist hired by Maxwell (Charles Shaughnessy). He's interested in her, but she's eyeing someone else. CBS.
* "Murphy Brown" (9 p.m.-9:30 p.m., WJZ, Channel 13) -- Murphy (Candice Bergen) is chagrined to find that Miller (Christopher Rich) is getting an interview she had been seeking. But then she learns what he did to land it. Joe Regalbuto (Frank) directed the episode. CBS.
* "The American Experience" (9 p.m.-10 p.m., MPT, Channels 22, 67) -- It's become the universal symbol of a sudden idea. But how did Thomas Alva Edison come up with the light bulb? And how did he lose some of the rights to other producers? PBS.
* "Deceived By Trust: A Moment of Truth Movie" (9 p.m.-11 p.m., WBAL, Channel 11) -- Stepfanie Kramer ("Hunter") stars in this new film as a social worker who suspects a high school principal (Michael Gross) is sexually harassing students. NBC.
* "Sex, Teens and Public Schools" (10 p.m.-11 p.m., MPT, Channels 22, 67) -- NBC newswoman Jane Pauley takes a turn on public TV with a special that looks at sex education in light of America's high rate of teen pregnancy. PBS.
* "Chicago Hope" (10 p.m.-11 p.m., WJZ, Channel 13) -- It's a repeat, already, but a good one that introduces one of the fall season's most interesting actresses. Christine Lahti, as new head surgeon Dr. Kathryn Austin, has become a scene-stealing presence. Rip Torn also guest-stars as Dr. Shutt's father, who turns up with a very young wife. CBS.
* "Murder Is the Case: The Snoop Doggy Dogg Trial" (8 p.m.-8:30 p.m., MTV) -- Timed to today's opening of the rap singer's trial, this news special with anchor Kurt Loder and legal correspondent Laura Porter includes an interview with Snoop Doggy Dogg, whose real name is Calvin Broadus. With two others, he is charged in a 1993 drive-by shooting in Los Angeles.
* "Biography: Boris Karloff, The Gentle Monster" (8 p.m.-9 p.m., A&E; Network) -- In pre-Halloween packaging, the series begins "Tricks & Treats Week" with a study of the actor best known as Frankenstein's monster. Still to come: "Frankenstein: The True Story," Lon Chaney Jr., "Dracula" and Bela Lugosi.