Sometimes images are betters than explanations...
Here's a small flash movie that shows the use of scriptaculous cinematics
in CPSWiki, wich allows the user to work on the wiki through Ajax.
The resolution might not be displaying well on the blog,
so you can also download the movie here if you want a better experience:cpswiki.swf
(Post originally written by Tarek Ziadé on the old Nuxeo blogs.)