[Wondermonkey]

You'll be in heaven then. Not only will it populate the birthday on the calendar automatically, but you can set a global function in iCal to remind you a few days before a birthday.

Also, and this is a lifesaver, since you share calendars with other iCal users you specify as well as Google Cal users, I have all my wife's iCal events/birthdays, and she's much better at keeping those up to date. So if the person in also in my address book, it will sync their birthday even if she entered it.

Makes me look like a better human being than I am. I like that.