Yes it defeats the whole purpose of a touch screen, but if you love your iPhone while never quite got the hang of typing on a non tacile screen, My Touch Screens is the product for you.

For $7.99 you can get a sticker that will cover your iPhone and bring back that tactile feeling, so you make less typos and can feel what your doing.

And as you can see from this video, the sticker doesn't interfere with watching video nearly as much as you'd think.

website, found via