Interactive screen capture software
MatchWare ScreenCorder is a video recording program that captures everything happening on your screen.
It's the kind of tool you need when you're building tutorials or instructions about how a particular program should be used. You've got two ways to control MatchWare ScreenCorder - either by mouse or by keyboard shortcuts. Mouse is a lot easier but keyboard shortcuts are useful if you don't want the annoyance of a mouse cursor on your screen.
What makes this particular screen recorder a bit different are the multimedia elements which means arrows, boxes, magnifying glasses and notes that can be used to annotate your screencasts in an interactive way. For example, you can add elements such as self-assessment questionnaires, the results of which can be sent automatically by mail to the researcher. Screencasts can be imported to WMV, AVI of Flash although the developers only recommend exporting to Flash if you've used a questionnaire.
If you're looking to do more than just show but also question people how they use a program, MatchWare ScreenCorder is a very promising solution.