Edward Hopper's monster lurks outside the nighthawks' diner. James Whistler's monster rocks in her chair. Monsters invade masterpieces by Dorthea Tanning, Paul Cezanne, M.C. Escher and many other artists, and the monster emerging from Claude Monet's Water Lilies is unforgettable. Our guide for this romp through re-imagined masterpieces is an engaging hamster, while thumbnail biographies of the artists identify their iconic works.