If you're developing a "web app" for iPhone, this may be helpful to you: iPhone look and feel CSS Skin. Complete with JavaScript and CSS
Engadget has a list of things that iPhone owners would like changed. How would you change the iPhone is a great start, but remember folks... Apple does what it does when it wants to.
Wil Shipley gives us his take on iPhone's AJAX SDK.
Tips on getting your photos from Lightroom to the iPhone from James Duncan Davidson.
