You might expect that the cochlear implant, a device that can give deaf people the gift of hearing, would be embraced by the deaf community. Josh Aronson's Sound and Fury, a compelling and often devastating documentary, tells a different story. Two brothers, one deaf and one hearing, grapple with a decision concerning their deaf children, and the debate that rages through the extended family turns less on technology and medical concerns than social politics and culture. The deaf parents of a school-age girl fear what the implant would do to her unique identity, while the hearing parents of a toddler see no question at all. Aronson gives all sides their say, but ultimately the increasingly angry arguments reveal prejudices and fears from both sides and split the once-harmonious family, much like they have split hearing and deaf communities across the country. --Sean Axmaker