I'm with you. The other features are marginal for me. But i have residences in ky and fla, and at the latter i can't use the phone inside my townhouse. ATT knows of the tower signal deficiency but after 8 months of my reporting it and their acknowledging it, they haven't fixed it (it's in the middle of a suburban area, a mile or two from one of their "more bars in more places" billboards). So the chance of having it work there makes me eagerly anticipate getting one. In the end though i think the apps are going to be the big story about the iPhone, in the same way that the first spread sheet launched a boom in computer usage.
Make sure you check the 3G coverage map....
I wonder how many people will buy the iPhone while just assuming that they have 3G coverage....