Well worth a look is Fired Up - Celebrating Ceramics from York's Collection which is on exhibition at York Art Gallery, UK, till 15 January, 2006. Included are all sorts of tiles, including a Roman chimney, an antefix, a scored flue tile, and also later tiles such as a Polychrome Relief tile (10th-12th century), delftware tiles, and later items. There are also lots of pots, from Prehistoric to the 21st century. There's even a bathroom sink on display. In fact, the exhibition has a refreshingly broad interpretation of ceramics.
There is also a short film of three experts looking in depth at four pots - the Severus Roman head pot, a Medieval Medallion jug, Delftware charger, and a modern piece by Kate Malone called Bursting Dense Garlic Bud Life Force. Very illuminating.