You touch the screen on the object to focus on. Spot meter works the same way.

sorry, did not understand that.

Kevin -
it's a specific mode in the camera, where the AF function can be "directed" to a specific spot on the touchscreen - as with George's setup - I hit p-menu, spot focus, and in two touches, I'm in a sort of "assisted manual focus" mode - your 3 has it too I think - search your menus.

All the critics seem to hate the touchscreen, but for spot focus, what could be better than telling the cam to "focus HERE!" And now over HERE! And now back HERE.... bwahahahha, complete control at my fingertips!

Rack focus, easy, focus off center, easy, and one touch and you're back to auto focus.

Try it, you'll like it.

Spot focus is great. If only there was a way to detach the LCD or add another and use it like a remote...

actually I like touch screen more that traditonal navigation

I'm really far sighted. I can get good focus with the touch screen without wearing glasses! :-)