Here are some great books that help with some of the tasks in creating effective online Flash demos...

Great Demo!

Even though it's all about giving personal technology demonstrations, I'm reading it now to see if anything applies to online demos. It's a big seller so it must be pretty good.  Get it at Amazon.com. Full review coming soon...

Awesome guide on creating effective PowerPoint presentations from the woman who created Al Gore's deck for An Inconvenient Truth. Not about demos, but much of the advice on overall strategy, diagrams, color, layout and more apply. A beautiful book full of great insight. Highly recommended for anyone who gives presentations, and for online demo producers for the related advice. Get it at Amazon.com.

Packed full of great examples from renowned presenter and presentation designer, Garr Reynolds. Get it at Amazon.com.