A new PBS documentary about Muslim Spain aired on August 22, 2007. The PBS web site does not have much info on the topic.
Islamic Spain was the closest thing to what is today a multicultural society. Jews, Christians and Muslims lived together, and excellent achievements were made in the fields of culture, art, poetry, astronomy, medicine, agriculture, commerce, and much more. This period is known in modern Spanish as La Convivencia (the co-existence).
However, one of the producers, Alexander Kronemer wrote a brief yet informative article on the documentary for the Christian Science Monitor. There is also a review by Cynthia Kane at the Sarasota Herald Tribune.