From Dan Auclair:
AddressBookSync is a handy tool to keep your contacts' pictures updated if you have numerous Facebook friends in your Mac OS X Address Book. If your phone supports synchronization with Address Book you should be able to have your contacts' profile pictures show up when they call you. Birthday synchronization is also available (nice for the iCal birthday calendar). AddressBookSync supports the automatic matching of many common short/alternate first names between Facebook and Address Book (i.e. Michael and Mike, William and Bill, Jessica and Jess).
What's new in this version:
Fixes a localization bug dealing with how birthdays are formatted in some countries.