If you use OS X , addressbook, and AppleScript, then I think you’ll like relationship completer.This plug-in to Addressbook will fill in the obverse relationship for selected contacts: so if (a) is (b’s) assistant, b is marked as a’s manager. Quite handy! Unfortunately it doesn’t complete real relationships: So don’t add x as your girlfriend and expect you to become her boyfriend (or vice versa 🙂 ).
Diamond Age 