documentarytube.com
Watch Full-Length Documentaries Online for Free. It has got top documentary films.
Wpisy
photobucket.com
Photobucket is an American image hosting and video hosting website, web services suite, and online community.
pbs.org/search
It’s video search engine. To find a video on the PBS.org website, you can search by keyword or browse available categories.
tubesurf.com
It quickly finds videos on YouTube, MySpace Videos, Google Video, and Yahoo! Video.
LINK: http://tubesurf.com/
twitch.tv
Twitch is a social video search engine for gamers.
LINK: https://www.twitch.tv/
soku.com
A video search engine that searches for videos from Chinese websites.
LINK: http://www.soku.com/
vidsea.com
Vidsea is a Video Search Engine. This Search is a vertical search engine specifically for searching Video clips on the Internet. VidSea simulates the Video Search by searching several online sources and displaying the matching results on top.
LINK: http://www.vidsea.com/
youku.com
It is a Chinese video site. A resource full of interesting Asian video content.
LINK: http://www.youku.com/
tudou.com
Tudou is a Chinese multimedia site. You can browse the videos, but all of the written content appears in Chinese.
LINK: http://www.tudou.com/
rottentomatoes.com
Rotten Tomatoes is yet another video aggregator with film clips, trailers and more. They produce their own shows and even have an online community.