One thing that does seem to be bad that I had put a lot of hope into is the voice dialing. Perhaps I need to configure it correctly, but right now with my Bluetooth headset, I can't activate voice dialing without messing with the phone. Then, if it can't understand my command, it provides a list of options on screen, and provides no audio interface, so I would have to further fiddle with the phone. This pretty much defeats the purpose of having voice dialing. With my old phone, the voice dialing was pretty good. I pressed the button on my headset, which activated the voice dialing. I could speak my command and the phone would ask me through my headset for clarification and tell me what it was doing. I could then provide voice input to tell it whether it had gotten it right. The only time I needed to physically interact with something, was to push the button on my headset, which is safer when driving than trying to get a button on a phone. So that's a bit of a disappointment. Hopefully Brian can provide some insight on this when I see him.
One silly thing about the phone is that the headphone jack is a (proprietary) mini-USB jack. I can understand some of the reasons they did this. This jack doubles as the power port for the phone as well as the data jack, so there are fewer jacks on the phone. However, this also means that you can't use headphones to listen to music while charging your phone. This is rather silly.
The interesting thing I have found with this, is that when setting up contacts, you can opt to have calls from a contact go straight to voicemail. Hehe. It's an interesting feature, though one I don't imagine I will use very often, as generally I only have people in my contacts that I want to talk to.
I have some other quibbles about the phone, but don't let that fool you. I like the phone quite a bit. I've downloaded some cool apps already, including a list tool (Quicklist) that allows me to use my finger as a stylus to quickly jot notes without having to open the keypad. It's a cool phone. However, it becomes annoying that I have to press the menu button every time my phone goes to sleep (which is every time the screen goes dark, which happens after every two minutes of idleness) in order to unlock the screen. I'm also having some difficulty getting audio notifications, or perhaps it is just that I don't hear them, as I just tested my email notification and it worked just fine. The notifications are great, and my phone tells me about my emails before my GTalk application does.
Well, my upcoming trip will put the phone to the test (as well as give me some 3G access), so we'll see how me and my G1 get along.