I just have to mention this great link. When you’re done with an OS-Deployment and eventually want to remove the computer from the install collection, a common way to do this is with a script in the end of the Task Sequence. But this is a much sexier way to do it, by removing the computer from the CM-server when the status message from the Task Sequence is marked as finished.
Danovich is the author.
http://blog.danovich.com.au/2010/03/12/remove-computer-association-from-collection-after-sccm-task-sequence/