National Institutes of Health
National Institute on Deafness and Other Communication Disorders
Searchable database of the NIDCD, one of the Institutes of the National Institutes of Health (Federal Government). Covers a wide range of hearing related topics/research.
Smithsonian Institution
Smithsonian American Art Museum: Gallery Talks
This national museum offers several videos of gallery talks given in American Sign Language.
PBS
Pbs Teachers: Sound and Fury: Deaf and Diverse
Identify beliefs, values and attitudes of deaf culture. Explore the causes and special communication needs of deafness, research the role that American Sign Language plays in forging a sense of community and create your own "sign name".
Fun Brain
Fun Brain: Learn to Sign Letters of the Alphabet and Numbers
Find a game that teaches the American Sign Language signs for letters and numbers.