Google Images (click tools -> usage rights -> creative commons)
Smithsonian Flickr PhotoStream
National Parks Service Imagebase
Everystockphoto - Search engine for free images.
Open Clip Art - Lots of free clip art.
Pics 4 Learning - Free copyright friendly images for educational use.
List of Public Domain Image Resources - Even more copyright friendly sites
ccMixter - Thousands of free sounds and music to download and use.
Piano Society - Classical piano music uploaded by users that is free to use.
YouTube Audio Library - Download background music for your video, completely free.
Jamendo - An independent music community with unlimited free streaming and downloading.
Free Music Archive - Many genres available as well as curated sounds to help you find what you need.
Melody Loops - Royalty free background music.
Moby Gratis - Created by the artist, Moby, Online application system, which registers you to use the site.
Sound Search Engine - Huge site for finding sound effects.
Purple Planet - Lots of free full length songs to download and use.
Zap Splat - Free sound effects with a huge variety to choose from.
List of Films in Public Domain
NASA Video Gallery - Space videos!
Newsreel Archive (YouTube Channel)
Newsreels from Prelinger Archives, in Internet Archive
Library of Congress News and Videos
SC Moving Image Research Collections
YouTube Creative Commons Search - Search > Filter > Creative Commons
Library Guide adapted from Christopher Newport University