CBS Radio Workshop "Brave New World"
http://archive.org/details/CbsRadioWorkshop-BraveNewWorldjohnr2443
An adaptation of the novel, narrated by Aldous Huxley and performed by a cast of voice actors.
Brave New World Revisited, by Aldous Huxley
http://www.huxley.net/bnw-revisited/
The text of Huxley's classic 1958 essay, which examines the themes addressed in "Brave New World" from an academic standpoint.
Utopian Fiction
http://www.utopianfiction.com/
A website defining the concept of Utopia, and cataloging both utopian and dystopian literature.