The Wall Street Journal had an interesting article (subscription required) about new technology that will allow cell phones to become mobile projection units. For those of us used to lugging around projectors, albeit smaller than they were a few years ago, this potential technology development could bring a good deal of joy. The article states that Microvision has released a prototype of a unit that can be integrated into a cellphone for use as a projection unit. They are projecting (no pun intended) that the projection technology will be released in late 2008.
Other companies reportedly working on the technology include Symbol Technologies and Explay Ltd.
Dr.Nat the Technocat, has a YouTube video on this technology...