Wikipedia Loves Art is a scavenger hunt and free content photography contest among museums and cultural institutions worldwide, and aimed at illustrating Wikipedia articles. The event is planned to run for the whole month of February 2009. Although there are planned events at each location, you can go on your own at any time during the month.
The event opened up last Sunday at London’s Victoria and Albert Museum, and is coordinated by the Brooklyn Museum, with the participation of the V & A, the Carnegie Museum of Art, the Film Society of Lincoln Center, the Honolulu Academy of Arts, the Houston Museum of Natural Science, the Hunter Museum of American Art, the Indianapolis Museum of Art, The Jewish Museum (New York), the Los Angeles County Museum of Art, the Metropolitan Museum of Art, the Museum of Modern Art, the New York Historical Society, the Smithsonian American Art Museum, the Taft Museum of Art. There are totally 15 different museums and cultural institutions participating.
Fred Benenson of Creative Commons spoke with Jimmy Wales about the event, and produced this quick video where Jimmy explains how excited he is about the event.
For details, and to see if a museum near you is participating, see the Wikipedia page devoted to the event.