I'd have one... if I didn't have to pay for it.
But I would not exchange it for my Blackberry -- no way, never.
I have a friend who works for Apple and I have to feign enthusiasm when he gushes about the iPhone and iPod. I don't have an iPod either, btw. I have a great non-iPod mp3/video player.
My friend calls it a 'craptative' and I send him all the links I can find about security isues with the iPhone to get him back.