Sample url: http://www.screencast.com/t/3ZEjQXlT
Screencast.com is an video streaming site that features tons of
videos for you viewing pleasure.
The site has an Alexa rank of 1963, which is considered to be quite good.
To download Screencast.com videos you can't use the dl-trick but you can always just copy-paste it or use our bookmarklet shown in the top menu.
More info about Screencast.com is coming soon.