If you could have any app for a Windows Mobile phone, what would it be?

I just signed up with Wind and got a HTC Maple, and was disappointed to find that when downloading apps, I only had a choice between 30-40 different apps, some of them being trial versions to others.

As a result (and being a student programmer looking to make a name for myself), I am collecting ideas of what kind of applications people find are lacking for their smartphones for a project I would like to start. Or maybe you have an iPhone/iTouch/Android/Blackberry but you can't find the right app. List any suggestions here, but try and include this information:

1) What do you want the app to be able to do? Include any features that you think it should have.

2) What would make this app better than existing apps (if they do exist)?

3) What would you name it?

If I use any part of your idea then I'll give you credit if/when the app gets released to the public =)

Thanks for the suggestions.