I hate concept videos. They solely exist to raise everyones expectations to unattainable levels. Should the product ever get released people will be disappointed by realities like battery capacity and a pico projector only working in a very dark room. I wish others would adopt Apple's strategy of announcing a product with a live demo and a release date within months of that showing.

* I get this is a Mozilla 'vision' but watching videos of the MS Courier left me bitter concept videos </rant>