Motorola Droid Pro
I wonder how hard it would be to unlock?
1: Activate it on a Verizon Plan
2: Call global tech support and get unlock key
The only pitfall is it has to be on a verizon plan to get the unlock. I'm sure you can do it other ways, but verizon won't help you unless it's on one of their plans.
Of course, then you're stuck paying full retail, but you'd pretty much have to do that anyway if you didn't intend to have it on verizon.