I used the leaked iPhone 2.0 firmware. It's like I when I first bought the iPhone over a year ago - I can't put it down.
But this time, I can keep adding features. Some will be better when push support comes in September, like AIM and NetNewsWire, but it's pretty damn cool.
My personal favorite new app is Shazam. That's one really cool thing Verizon customers could have over me - but this is here now and free!
OmniFocus is pretty great too, I'm keeping it synched with my desktop.
I'm sure you'll read about this everywhere else, but I felt like saying something here.
:: Sent from my iPhone, BTW ::