I was going to post something about touch screen iMac's.
When I was at the last LA auto show Nissan had several of them in their area. I am new to Mac, so searched the Apple website and couldn't find anything. I just figured Apple stopped making them based on what Jobs said about touching a large screen.
Anyway, they must have had that done also, but I will say it was done extremely well because I couldn't see anything that didn't look like original equipment.