Haha, Photoshop!!!
I have a couple screenshots of my phone hitting the 20% warning with:
Usage 2 Hours, 37 Minutes
Standby 7 Hours 33 Minutes
That's with 3G and Wifi on. But still... That's kinda crazy. I don't know if this is normal, but when I'm on Edge and I talk on the phone, I lose about 1% every 2 minutes. That gives me about 3 Hours and 20 Minutes. Something is SERIOUSLY wrong with that. The specs say I should be getting up to 10 hours. Also, when I plug in my phone it'll go from 20% to 60% charge in just over 10 minutes. I don't think it charged that fast when I first got it.
I took it to the Genious bar when I was still covered by Apple Care and the guy just told me that it was normal.
I'll tell you something, I have NEVER had my phone last me a whole day. Even with minimal use. Somehow it finds a way to die. I went to sleep with my phone next to me at 40% once and woke up to find it totally dead...