Video

Video Editors
Both eyespot and Jumpcut can do the basics of trimming and mixing, both will host the file, and both allow you to mark your movies as "private" if you're editing something you don't want (or aren't allowed) to redistribute the video.
 * [|Animoto] - http://animoto.com/
 * [|Zamzar.com] - http://zamzar.com/ (Can't //edit// video, but can //convert// video to almost any format.)

Search Engines

 * [|Mahalo] - http://www.mahalo.com/ (The world's first human-powered search engine.)

General Video Hosts

 * [|Archive.org] - http://www.archive.org/ (A lot of content here may be edited and/or reposted. Check the License for each media file to make sure.)
 * [|Ourmedia.org] - http://www.ourmedia.org/ (A lot of content here may be edited and/or reposted. Check the License for each media file to make sure.)
 * [|Youtube] - [|http://www.youtube.com] (I know, I know, but they're still a video source and you can use their web interface to //record// video as well. There's lots of copyright infringement here, though. //Use at your own risk.//)

Subject Specific Video Hosts

 * [|Discovery.com] - http://www.discovery.com/ (Content here is copyrighted by Discovery Communications Inc. and may not be edited or reposted without permission.)
 * [|Discovery Networks Podcasts] - http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewArtist?id=123028366 (Link opens iTunes)(Content here is copyrighted by Discovery Communications Inc. and may not be edited or reposted without permission.)
 * [|National Geographic.com] - http://www.nationalgeographic.com/ (Content here is copyrighted by National Geographic and may not be edited or reposted without permission.)
 * [|NOVA (PBS)] - http://www.pbs.org/wgbh/nova/index.html (Content here is copyrighted and may not be edited or reposted without permission.)
 * [|TeacherTube] - http://www.teachertube.com/ (Like YouTube except everything is supposed to be educational and kid safe. The copyright section talks more about that you can post than what you can do with things that are posted, so assume you can't remix/repost unless the video says otherwise.)
 * [|National Geographic Podcasts] - http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewArtist?id=169645888 (Link opens iTunes) (Content here is copyrighted by National Geographic and may not be edited or reposted without permission.)