It seems to me that the answer to that question will have to do with how close the HTPC is to you. If it's going to sit within arms reach, the I supposed it might be worthwhile. If it's across the room or in a closet, then a touchscreen won't do you any good.
My advice - get a good remote control instead. If you really want to do touchscreen, look for a wireless touchpad.
Kevin
My advice - get a good remote control instead. If you really want to do touchscreen, look for a wireless touchpad.
Kevin