The Byzantine Catholic Church in America (unofficial)

Excellent website with news and information relating to activities from around the Metropolitan Archeparchy of Pittsburgh. Site includes an interesting forum for discussing all things Byzantine and the relationships between the Churches of the East and West, as well as a host of hot links to other Byzantine Catholic, Eastern Orthodox, and Roman Catholic websites.

Byzantines.net

Another good reference source for things Byzantine. Site even includes audio files of Byzantine sacred music.