It's in its infancy, but it's a great start! Considering how little dance has made it onto DVD or Netflix, this is a godsend.
Dance in Video (from Alexander Street Press)
About the Database
Dance in Video will contain 250 dance productions and documentaries by the most influential performers and companies of the 20th century. Selections cover ballet, tap, jazz, contemporary, experimental, and improvisational dance, as well as forerunners of the forms and the pioneers of modern concert dance. Included are classic performances from top ballet companies; experimental works from up-and-coming dance troupes; documentaries by and about leading choreographers; videos on dance training; and other items covering a wide range of 20th century dance styles.
Many performances currently targeted for Dance in Video include Points in Space (Merce Cunningham Dance Company); highlights from Dance Theatre of Harlem; an Evening with the Alvin Ailey American Dance Theatre; Strange Fish (DV8 Physical Theatre); Silence is the End of our Song (Royal Danish Ballet); Intimate Pages (Rambert Dance Company); Swansong (English National Ballet); Peter and the Wolf (The Royal Ballet School); Rainbow Round My Shoulder (Donald McKayle); and hundreds more choreographed or performed by dancers and groups including Agnes de Mille, Mark Morris, Lestor Horton, Anna Sokolow, Norman Walker Dance Company, Anthony Tudor, Jose Limon, Paul Draper, Chuck Green, Alvin Ailey American Dance Theatre, The Kirov Ballet, the Bolshoi Ballet, National Ballet of Canada, Nederlands Dans Theater, and others.
Specially developed controlled vocabularies let users browse by composer, choreographer, genre, performer, ensemble, and role.