This one's a rediscovered link. The Glass Engine is a database dream. You can navigate all of Philip Glass's compositions (and listen to them in full) by qualities such as title, year, length, joy, sorrow, intensity, density, and velocity.

note: the glass engine works ONLY with Internet Explorer 4.5 w/ java enabled. even though the page says it function with os x, i could only get it to work on IE for OS9 (classic)

also random note:
in Summer 2005, Philip Glass and the Philip Glass Ensemble perform a series of live concerts with screenings of the Qatsi Trilogy at the Rose Theater in New York. yay.