as a passionate FM user I was always annoyed by the poor integration of FileMaker with OSX. So I want a project database but I need to duplicate the Mac Addressbook in FM and work with that, same for dates, events etc.

Now here is the "logical" step but it stop somewhat too early. So you got all your data nicely combined in a table, a form.. but then what are *doing* with it???

-> no buttons "send e-mail" "print phone numer in large" ... next to an address entry"
-> no button "open" next to a file reference
-> no context menu next to event like "show this in iCal"

So if this one way road approach is a little bit modified I would probably buy the product as FM is often an overkill.