TOSHIBA TDP-S25 DLP PROJECTOR. The TDP-S25 isn't small or particularly quiet, but it looks modern and up to the job of serious projection. It has been finished in silver, so it'll match most of your consumer electronics gear, and it has all the necessary buttons clustered together on the top. Two VGA inputs is over the top, but if two people are making a simultaneous presentation, there's no need to swap VGA cables. However there's only one PC audio input, so you would have to share it, which doesn't make much sense. There's also a VGA output, so you can loopthrough to a monitor -- but we can't see why you'd want to.
