I am getting an iPhone the second I can, but:
um..me. I would love to be able to have an extra battery. I know I should always plug it in while I'm driving...but I wont. And I am going to often have a dead iphone.
as far as business goes, I'll use it for business, but I am not a business user, I am a designer.
I saw a business user once...on a plane to chicago, befor the plane took off...it was crazy! He was like a high speed robot typing on his pda faster than I could ever type on a keyboard...called 6 people in 5 minutes, talking about profits and margins and other "businessy" stuff...all while drinking 3 screwdrivers. The clicking of his little keypad is how we all knew he was important...very important. The iPhone is not for him.
I have small clients, I consider them friends. I care more about the last episode of survivor than the stock market. My desktop picture will probably be a picture of my daughter playing at the beach or a picture of my wife's boobs. I am not important

The iPhone is for me.