Accents

George Mason University has a fascinating project online: a database of recordings of accents in English from all over the world, which you can search or browse by geography.
the speech accent archive

The International Dialects of English Archive, IDEA, is a repository of primary source recordings intended for artists in the performing arts.
IDEA

ENGLISH around the World is a section from the website of an English teacher from New York, offering many interesting links to information.
E.L. Easton