What's Your Dream Smart Phone Application?

Have you ever dreamed of having your own fantasy software application?

Maybe something that tracked the food you ate and your exercise so you would know exactly what you need to do in physical activity to not gain any weight?

How about pointing your cell phone at a piece of Art and have it tell you all about it?

Press a single key and have the microphone on your Smart Phone determine what song is playing and gives you information about the artist and the ability to download it.

I am currently working on an application for my business that works the way I want to work and not an off the shelf piece of software.

What would your fantasy/dream application do?