About a week ago, made the switch to Android for my personal phone by getting a nice shiny Droid 2. For personal phones, I normally had been using some sort of WinMo phone, most recently being an Omnia (seems to be common amongst a lot of Droid owners).
So far, have rooted the phone and removed the Verizon crapware. Considering giving up my Zune HD and consolidating to one device - so far, liking Meridian for a player over the horrible stock player. By day, I am a software architect in the Microsoft .NET world. As such, I've put in a request to beta test MonoDroid. Been thinking about a few ideas that I might like to develop, but nothing firm as of yet.
Seems like this is a great community, so far. I plan on being an Android user for a long time to come - despite the fact my work phone is a Blackberry Bold. ;-)