About an year ago I remember looking into a online tutorial using Screencast. After that I didn’t pay much attention until recently I saw this article on Mashable. Out of these I have tried CamStudio and Wink. Both are quick and easy to use.
Although the primary use of Screencasting is for creating tutorials but I feel this can be used by every one who communicates with some one remotely. This would surely give a new dimension to our communication channel.