Artist David Hockney draws “a walk around a chair.” Also: singer Bobby McFerrin provides musical accompaniment for the animated adventures of “Flatman.”

Carrie Mae Weems demonstrates how photographers create meaning through composition. Also: William Wegman's fanciful video "Surprise Symphony," spotlighting his dog.

Conductor JoAnn Falletta explains melody and accompaniment ("It's called that because it keeps the melody company," says Penn Jillette). Also: "singing" cows.

Artist Wayne Thiebaud and cartoonist Matt Groening demostrates how lines are used to create shadows and suggest motion. Also: rope tricks with a lariat.

Julie Taymor directs "The Tempest," to demonstrate how costume and set design are used in theater to "create the illusion of being somewhere where we obviously aren't."

Penn and Teller teach kids about melody; composer Allen Toussaint writes a song to demonstrate how repetition and variation are used in creating music. Also: singer Bobby McFerrin and saxophonist Jane Ira Bloom team up for a jam session.

Robert Gil de Montes shows how paint color can be used to trick the eye and express an artist's feelings. Also: computer artist Marilyn Ono on the mixing of hues.

Max Roach demonstrates rhythm. "Different beat patterns make you move in different ways," says host Penn Jillette. Also: the Blue Man Group.

Nancy Graves creates a sculpture in an episode about balance and symmetry. Also: tightrope walker Brian Dewhurst demonstrates how weight affects balance.