Have to say im new to iphone and to apple(not keen on the later till now)
The hybrid maps while you travel(not to mention tapping on a contacts address takes you to there visually in maps!

), apps, great touch screen and accelerometer make the iphone fantastic. But for me the biggest "WOW" i got from the iPhone has to be the phone calls! its so clear. I had a k700i, XDA exec, countless nokias before and numerous landline phones. all of them were muffled but the iphone is so crystal clear that its like the person is stood next to you talking!
have to say im chuffed, i didnt think i would bother using the iPhone as a phone as im used to my clunky XDA which was a pain for calls. but the fact its so good as a phone and i get 1200 minutes a month. im gonna make alot more calls on my iPhone!
i've never really liked apple, but after ive seen how free flowing the iPhone is and looking at the OSX Leopard video. i think theyve made serious inroads into bringing apple products to my attention