I like this scripts. Fast, straightforward and to the point. I do have an issue with it where I've noticed I can't select my email address for the notification, nor can I select a different notification. This causes some problems with syncing. Other than that it works beautifully. It'd be nice if it was able to:
1.-Be able to properly choose the email address to use (home, work)
2.-Be able to setup a different kind of alert.
3.-Not create events from the person's birth date but from today onwards (this may just be how iCal shows it)
4.-Be able to represent ANY date