I bought a white phone; why are the headphone and adapter cables black? Ick.
I thought it would be nice having a hardware camera button, but pressing it moves the phone, making photos more blurry. In broad daylight it'll probably be more useful.
The included headphones are comfortable enough, but pretty much unusable on my bicycle as they seem to amplify the noise of air rushing by my ears.
The trackball is not all that accurate, but with that and the keyboard I don't accumulate fingerprints on the screen nearly as quickly as on the iPhone.
Ah, multi-tasking. How is it the iPhone runs MacOSX but can only run one app at a time? Works great on the G1.
The software keyboard is comparable to the iPhones, if not quite as accurate. But, I have a G1, I don't need to use the software keyboard if I don't want to. I have a choice. Yay.
The software in the Android Market is definitely more crude than the iPhone stuff, on average. However, except for commercial stuff such as ebook and audible apps, I've been able to find apps to do everything I used to do in the iPhone and do it well. For similar money or for free. I'm impressed.