We've talked about the MiLi Power Pack for the iPhone before, and just when you thought MiLi couldn't get any better, they've released a device that will allow you to project the movies you usually watch on your iPhone, onto a wall (or any surface you want, really).
The MiLi Pro uses the battery power from the MiLi Power Pack combined with the LED micro video projector to allow you to turn your iPhone into a mini movie theater. It has the capability to display 640x480 high resolution images, with a variety of AV inputs.
I really love this idea and I honestly can't wait to get my hands on one. I watch plenty of movies with friends via video projector, and this one would be about 1/10th the size of a normal projector. It'd be pretty handy for those impromptu movie sessions.