Even though I already posted today, I came across this great post by Britt Bravo with examples of iPhone applications in the nonprofit world. So check it out!
Oh, and by the way, I can't remember where I heard or read this, but apparently, Kraft foods is taking the iPhone world by storm. They have figured out a way to charge people $.99 to download an application that lets people peruse recipes. But it also shows ads. And they have loads of users. Genius!