I've been hit up a few times. Mind you, I don't declare that I am using one, I hide it in my hands as best I can, but people will still find it.
Some girl sitting behind me on the light rail on the way to Hoboken tapped me on the shoulder, asked me if it was an iPhone, and then sat next to me to talk about. She was cute, but not cute enough for me to let her play with it. Coincidentally, she missed her stop because of it and had to stay on the train to go back to her stop.
I got an email in the meeting I was taking the train to. Needless to say it was a big hit there and all the guys wanted one instead of the Blackberries they were using.
I went to a wedding over the weekend and it got passed around quite a bit. An aunt of mine had the most fun with it (thank you, iPhoto). Come to think of it, so did my mother. Baby pictures on an iPhone is clutch.