M.C. Escher Exhibit
Boston's Museum of Fine Arts is currently hosting an exhibition of 50 of M.C. Escher's mind-bending images, and we went to see it this afternoon. These two prints especially appealed to me -- Rippled Surface (1950) and Puddle (1952), even though they are not in the style he is best known for.
Here's an interesting article about the exhibition if you are interested.