The nice thing about the iPhone WordPress is that there is a plug-in for just about everything.
Lets say you want to create a fancy image gallery to showcase your photography. With NextGEN Gallery you can add as many images as you want and have the beautifully displayed in blog posts or on a gallery page.
Want to poll your audience? With WP-Polls you can create as many questions and get as many answers as you want.
Maybe you want to you want to add Google Analytics to all pages of your blog AND see your stats on your WordPress dashboard. Google Analyticator can do that.