Camtasia Studio

Camtasia Studio

http://www.techsmith.com

A fantastic tool for capturing your computer screen and anything that is on it.  Camtasia Studio even has a plug in for PowerPoint so you can record your presentations without leaving PowerPoint.  Add annotations, zoom in on the screen and export your finished product to a lot of different video formats including MPEG 4.  Rumors have it that a MAC version will be released sometime this year.

Camtasia Studio also integrates with Camtasia Relay, a lecture capture system for a really cool system for capturing and publishing presentations.  Educational pricing makes this tool a must have for educators building fully online courses and tutorials.