Because it has a wide audience, the Denver Art Museum has to come up with a range of attractions, but certain kinds of shows are hard to come by, and expensive, to boot. That's what made Houdon From the Louvre, an in-depth look at the master of classical French sculpture Jean-Antoine Houdon, so memorable. Active before, during and after the French Revolution, Houdon was a super-realist who specialized in sculpting portrait busts of notable figures in Paris, including the visiting American ambassador, Benjamin Franklin. He also sculpted George Washington while on a trip to the United States. In celebrating rare works by an old master, shows like this remind us that museums are about more than just counting heads.