Give a presentation wirelessly from your iPhone or iPod Touch without additional presentation software!
Air Projector projects PDF documents and photos wirelessly from your iPhone or iPod Touch to a web browser connected on the same local network. No additional client software is required.
Always be ready with your key presentations in your pocket.
It'll only show a bunch of images for me (can't see how to show a PDF) so presentations have to be turned into a series of images and then into a album.
I've not tried it in class yet but, in theory, I could present to every screen in the room, they all have laptops, and that's awesome!