Visual arts/museums

New York Times architecture critic Paul Goldberger will discuss the contemporary urban skyline.

Herblock, the Pulitzer-Prize winning editorial page cartoonist for The Washington Post since 1946. His cartoons are syndicated in more than 300 papers.

Architectural preservationist David Naylor, whose new book, Great American Movie Theaters, charts the past glory and current demise of a uniquely American architectural treasure, the downtown movie palace.

Art Spiegelman and Françoise Mouly, creators of Raw, an adult comic magazine filled with original and sophisticated graphics.

Anne d'Harnoncourt, director of the Philadelphia Museum of Art and an expert on Marcel Duchamp, the French artist, whose 100th birthday the museum is now celebrating.

Ralph Bakshi, who did the animation work for the cult hits "Fritz The Cat," and "Heavy Traffic." He's turned his attention away from animation to concentrate on oil painting.

Syndicated cartoonist Matt Groening. His strip, titled "Life in Hell," appears in alternative papers around the country. His animated characters (rabbits) also appear on TV's "The Tracey Ullman Show."

Keith Haring, whose playful and colorful artwork has made him one of the most successful contemporary artists. His work can be found in amusement parks, discos, T-shirts, and the subways, where he first got his start.

Photographer Ted Spagna. His most recent project has been photographing people and animals while asleep. It's attracted the interest of sleep researchers who see links that were not previously apparent.

Conceptual artist Jenny Holzer makes signs featuring original platitudes, which she displays in public places.