Epson's EMP-1715 USB Projector

<img src=" wireless. You can use the wireless to stream actual video in MPEG2 format to the projector, which also supports pausing, fast-forwarding and rewinding of video.

In addition, the EMP-1715 can play presentations off a USB Key, meaning you can leave your laptop at home. The presentations on the USB disk can most likely be images or MPEG2 movies, but we're not sure about powerpoint presentations.

Epson Ships World’s First USB Projectors [Bios Magazine via Gizmodo]