JING - http://www.jingproject.com another fabulous new app. This will screen capture what ever is on your computer. You can also open your web cam and it will capture the video. The final product is a flash file. They give you the embed code so it can be embedded on most web sites like wikispaces and blogs. In then free version you get 2Gs of storage space on screencast.

You need to go to the web site given above to down load the app to your computer. The flles you make are stored in screencast as swf files. If you upgrade to the pro version the files will be MP4 and therefore a lot smaller in size.