>I know this product has been recommended a few times on the UT and I bought a copy of it today (version 8) for a project we're busy with. What an absolutely awesome product for screen capture and related functionality. Very highly recommended.
http://www.techsmith.com - US$40, a bargain.
I like using Gadwin Printscreen. It is free, and has all the functionality I need. I should look into SnagIt and see if it has additional features.