I have an iPhone 3G.
yes the original, and i love it because it puts everything on one device so i dont have to carry around a phone PLUS a gaming device PLUS an appointment calender/notepad PLUS my iPod nano.
I believe the next big thing will be a 3rd or 4th generation iPad when apple adopts a cloud OS for blazing speed and anywhere accessibility.
But i will vote for the original iPhone, because it was a game-changer in the smartphone industry, bringing it to consumers instead of suits.
Long time reader, First time Poster.
most interesting apple product hands down would have to be the iphone, its hard to say how many countless hours i've lost just searching for new apps. It's a phone (occasionally), my ipod, my watch, my pda... my game console, angry birds anyone?