Bubblefest The annual Bubblefest proves that soapy spheres can be eye-catching and educational. Bubble artist Fan Yang and son Deni perform a dazzling show featuring bubbles in all shapes and sizes. Meanwhile, the Discovery Science Center's hands-on activities illuminate the science and math of bubbly concepts such as surface tension, air pressure and elasticity. Discovery Science Center, 2500 N. Main St., Santa Ana. 10 a.m.-5 p.m. Sat., 11 a.m.-5 p.m. Sun. Adults $12.95, children $9.95; bubble-show tickets are an additional $7. (714) 542-2823. http://www.discoverycube.org.
Los Angeles Pillow Fight Day Don't miss out on this perfect excuse for childhood wish-fulfillment at Los Angeles Pillow Fight Day, a massive pillow fight in the wide open air. The featherier your pillow, the better — just don't leave before cleanup or take out any inner aggression on an unsuspecting reveler. Pershing Square, 532 S. Olive St., Los Angeles. 2 p.m. Free. (213) 485-1645. http://www.pillowfightlosangeles.com
Noir City: Hollywood, 13th annual Festival of Film Noir The Film Noir Foundation has scoured the studio archives to assemble a feast of the genre, which is best consumed in its original 35-millimeter format. This year's program features several new prints, including "High Wall," "Loophole," "The Hunted," "Strangers in the Night" and "The Dark Mirror." Out of 28 films, 23 are not available on DVD, making this a rare opportunity to see your favorite shadowy tale of hidden weapons, hidden motives and stealth plans. Egyptian Theatre, 6712 Hollywood Blvd., Hollywood. 7:30 p.m. Ends April 20. Festival pass, $120; individual screening, $13. (323) 461-2020.
Meiji: Japan Rediscovered The Pacific Asia Museum opens "Meiji: Japan Rediscovered," a new mixed-media art exhibit that focuses on Japan's Meiji period (1868-1912), a dynamic era of international trade and tourism for the country. The exhibit includes prints, paintings, ceramics and textiles, and runs through Feb. 26. Pacific Asia Museum, 46 N. Los Robles Ave., Pasadena. 10 a.m.-6 p.m. Sat.-Sun. See website for ticket prices. (626) 449-2742. http://www.pacificasiamuseum.org.