I've used one of the HP Touchsmart touchscreens before several years ago and recently, I have to say i do NOT LIKE to have to touch the screen on a desktop machine. It is actually quite a pain to lift up ones arms, from the desk to the screen, and touch and drag, hold, etc. It SOUNDS great, like future stuff and all, but it is actually quite a pain in daily use. If the screen to touch was on the TABLE (like an apple touchpad) I think it would be better. (this is actually WHY I think we don't have touch IMAC's yet, I have the feeling that apple is of the same opinion.

just my .02$