I ran across the ScreenCastle service the other day and wanted to blog about it. ScreenCastle offers a free Java-based screencast recording solution. What separates it from other solutions is there's no installation required—other than accepting the Java cert when the applet loads.
It's definitely not as feature rich as Camtasia or Jing, but it will serve the most basic purposes for recording.
Where it really shines is as a tool for debugging a customer's problem. They don't need any other software installed, they just go to the ScreenCastle website and click on the big red button and record away. When their done recording, the video gets pushed to the ScreenCastle server and then provides the user with links, embed code, etc—which they can then e-mail to you.
The service is offered by Skoffer—who has published some information on their limited API. They show some examples on how you can integrate the service into a Wiki or Blogging service (such as WordPress.)
I'd love it if they opened up the API a little more, so that you could potentially push the content to private servers (or at least be able to download a published file and then remove it from their servers.)
Anyway, this is a great tool if you want to be able to have a customer record what they're doing on the screen and send you a video of it.