If you have any interest in Roman history, take a look at this exceptional web exhibit of the rennovated Greek and Roman galleries of the Metropolitan Museum of Art posted by The New York Times. The Panorama of Objects section has an excellent presentation of a few of the greater works in the Roman collection. The two Frescoes from a bedroom at Boscoreale are exceptional. Take a look around and listen to the audio descriptions of some of the pieces to understand just why they are important. I guarantee you'll learn something fascinating.