I’ve been trying to find a good way of describing Greasemonkey to friends and colleagues. It’s been a little dicey. Some folke get it immediately. Other folks are much more visually centered. So in my efforts to find a quick and easy way of explaining Greasemonkey, I ran across a screencast of it.
Jon Udell explains screencasting this way:

Screencasting is a medium that can deliver order-of-magnitude improvements over conventional documentation and training. If people aren’t “getting it,” maybe it’s time to stop blaming them and start telling stories they can’t forget or misunderstand.

Put more simply, its video and audio of computer screens, transitions, and effects. Hence, it is perfect as a means for remote training of targeted content.
And for those who do want a wide assortment of Greasemonkey info, check out the Dive Into Greasemonkey site.
-CyclingRoo-