I thought about picking up an Android phone just to mess around with (would never get rid of my 3GS though). I'd just keep both.
Either way - I don't see the point in spending 500+ for a phone that can't access AT&T's 3G network. Not worth it at all. Especially given all the issues people are having. No thanks.
That and the fact that I have bought so many apps from iTunes, it's a waste of money to go to a different device and have to buy the same apps I already paid for on my iPhone for a different platform. Another reason why if I won't get rid of my iPhone.
I'm up for a new corporate phone at work in February. I don't know if I am going to go with AT&T or Verizon (we have contracts with both and can choose), and I'm deciding between an Android phone or a BlackBerry. If the new tour for verizon drops before then (9650), I'll go that route, if it doesn't, I will probably go the 9700 route. I thought about the droid but that keyboard is horrendous. Plus I really need the ability to have spreadsheets and documents on the fly and edit them quickly and send them back. I don't know much about Android to know whether or not I'd have issues doing that. My iPhone actually does that very well with documents 2 go, which I know BB has as well.
Plus I've owned several BBs in the past and am already familiar with the OS, so there would be no learning curve, which is always nice.