The glass used on the iPhone touch surface is a thin chemically tempered glass made by Corning.
At the CES 2012 show Corning have announced a version 2 of the glass which is thinner than the glass currently used on the iPhone. The glass is in use by many other vendors of smart phone and tablets, for example Samsung.
The video (flash) is an advertisement from Corning. The are a couple of other interesting videos available once the advert has played.