We ran accross this recently when someone we know scratched up their iPhone by tossing her keys and iPhone in her purse. The touchscreen is pretty sturdy but won't stand up a lot of normal wear and tear.

If you have an iPhone (or any a a number of other new touch screen phones or computers and iTouch) be sure to take a look at this remarkable protection. We hate the bulky feel of the neo cases but this is really good.