NOVA: Musical Minds is a great doc about how the mind perceives music. It's based on Oliver Sachs new study Musicophilia: Tales of Music and the Brain. Sachs is the author of Awakenings and The Man Who Mistook is Wife for a Hat. This show is an analysis of four separate cases, one autistic man who can play the piano by ear, another man with Tourette's who plays drums as therapy, a third woman who cannot hear music as music, and finally a man who was struck by lightning who began to play the piano. If you are at all interested in how the brain perceives music, I highly recommend this.
You can watch the episode online here:
NOVA: Musical Minds