The Pico Pocket LCD projector is one of new class of small LCD projectors to reach the market. While I've been hearing about these units for years, this is the first one that I've seen for sale -- approx $450.
The ability to project from a iPod or other small device means that you can share the output from devices that were exclusively "personal" products. I cannot wait to see what happens when cell phones are able to connect to these devices. Better yet, it may not be long before LCD projectors are incorporated into all laptops and cell phones.
This is a great tool if you have a to give a lecture to a small group and the full-size projector does not work. It's also great for sharing the screens of devices that are otherwise too small for a group to see. Will these replace full-size LCD projectors? Probably not for a long time. Producing the needed amount of light would require a more substantial unit. At least it does at this point in history.