Check out Snag Films, a new site from Ted Leonsis. Snag Film's own blurb describes it well:
At SnagFilms.com, you can watch full-length documentary films for free, but we also make it easy for you to take our films with you and put them anywhere on the web. When you embed a widget on your web site, you open a virtual movie theater and become a “Filmanthropist.” Donate your pixels and support independent film! And click on “info” on any widget to learn more about that film and a related charity you can also support.
Donations to the related charities are processed by us at GlobalGiving. Walt Mossberg did a nice piece about Snag Films in the Wall Street Journal.