Sites of Interest to Classicists

The Advanced Book Exchange. Free service for those searching for books and manuscripts on the Internet. ABE has over 1.4 million rare and out-of-print books in its database.
Blackwell's of London. Quick and easy search engine for books, and shipping is surprisingly fast and reasonable [about 3 weeks for overseas, and about $2.50 for shipping.] Some good deals on Teubners and most paperbacks.
Classical Study Abroad.
Inter Libros. Gateway to Classics and Medieval Studies Research at Harvard.
Interpreting Ancient Manuscripts. Fascinating site dedicated to the study of textual transmission. Helpful tutorial included.
Maecenas: Images of Ancient Greece and Rome. A collection of photographs of ancient Greek and Roman architecture, cities, and archaeological sites.
On-line Survey of Audio-Visual Resources for Classics. (Hampden-Sydney College)
The Tech Archives at M.I.T. Collection of translated classical texts from M.I.T. Translations are usually old, but still useful to do word and concept searches.
Textkit: Greek and Latin Learning Tools. Textkit provides the largest collection of free and fully downloadable Greek and Latin Grammars and Readers on the Internet. We also have an amazing Greek and Latin forum where beginners help another with their language questions.