How are those LCD projectors for watching video content (DVDs, saved movies from a computer, and such) from at home? What do people think about this - with a good projector, is the quality ok compared to a traditional screen? And secondarily, I'm wondering about the projectors that have wifi (802.11g) capability. Can this be used to stream content in real-time, or is it only to transfer files for display on the projector? Does this work? Is this technology there yet?