Thanks Abhilash,
That's what I was thinking, but since this is new territory for me, I definitely wanted to ask the community. Thanks for your reply.
So, if I have the same datastores attached to hosts in different vcenter, couldn't I power down a vm in one vcenter, then browse the datastore on the other vcenter, and bring it up there? This isn't my intended way of migrating vm's, but I just happened to think of that too.