My two favorites are:
The Optoma Pico Pocket Projector, which is the perfect companion to any small video-capable device, such as the Iphone or Ipod. It's a $350-$400 pocket-size LED projector, and offers almost everything for a great pocket presentation (I say almost because audio is limited to the onboard speaker, or the speaker or audio output on your video device. It's pretty cool, though. Here's a fun British demo (with some over-the-top bad hosting):
Another, more practical innovation that will be great news to Iphone users, is the Power Slider Case (below), an enclosure for the Iphone which includes its own battery, and so adds many more hours of battery life (the current Iphone, which also serves as a computer device, sucks up more energy, so the battery lasts barely a day - if that). Not as sexy as the projector, but much more useful. It will be available for about $100 starting this Friday. This is one accessory I'll be adding to my collection.
For you non-Iphone users....more to come.....soon or later!