Like many others at Novell, I always prefer to do life demos when I need to deliver a session. A running demo environment allows you to be flexible while doing a presentation and in general the audience finds it more attractive to see the real thing. In some situations however it's more easy to just show some Flash presentation with a recording.
Today as was preparing myself for a demo I need to deliver next week, and due to the fact that the time I've got to run this demo is very limited, I decided to play safe and use a Flash presentations instead of running a real product installation. To create demo's like this I'm using Wink, it's a great freeware tool that allows me to capture what happens on the screen (both Windows and Linux) and allows me to edit what I've captured. I can add “Next” buttons so it will hold the presentation while I'm running it, it allows me to skip some of the time it takes to perform the install and I can export the demo into a Flash or EXE file (you may guess what I'll be using to run the demo on my SLED workstation ;-) ).
Are you using screen captures for training or demo, and if so what tools are you using to create these? Any tips or tricks?