I just received a Moto Droid last week as a gift and have been loving it. Coming from a Sprint WinMo 6.1 phone, it's a big (and very welcome) change! So far, the best part has been one-upping my iPhone-fanboy friends with the live wallpapers, customization, etc... The worst part is my horrid battery life because I can seem to put the thing down (even at work -- not good for my productivity).
Right now, I am stock v 2.1. I haven't rooted yet because I want to check out the stock features and read up on the rooting process before going down that road. I have tooled around the hacking section here and found that I have a lot to learn. I do have some limited experience with Linux and look forward to seeing what this device can do.
I've prowled several Android user forums over the past week and this forum has been the most helpful so far. I look forward to being a part of this community.