Hellow, I'm having some trouble to find an App/Hack for use the iPad as a tool for presentations; I find Prezi, and it's kinda what I was looking for, but now I need something for:

Use one iPad for play the presentation, and another 3 or more for the people how's going to watch me, those 3 iPads need to show what I'm doing on my iPad.

Sorry if it's kind of complicated to understand (It's a mess for me to explain jeje)

So that's it, there's an app? Maybe something on cydia? any idea? The one who give me some help will be my new hero!

Check out conference pad, you need to have the presentation loaded on each iPad and a Bluetooth or wifi connection, but can walk through the pages/slides and use a "laser pointer" to point out and direct attention where you wish. I don't own it but have looked at it quite a bit.

Yes, Conference Pad is a good choice. I tested it with two iPads and one iPod touch and it worked fine.

Knut