Got a Blackberry and a Macintosh? Want to sync them together? Have I found the program for you: PocketMac Blackberry Edition! From the site:
Now you can sync your BlackBerry handheld with your Mac. PocketMac BlackBerry Edition is the first program to allow Mac users to sync their crucial data between their BlackBerry and Entourage, Address Book, iCal, Now Contact, Now Up-To-Date, and even Stickies. And it's fully integrated with iSync as well!
Looking at the picture list of Blackberry devices that the software is compatible with, it seems to be compatible with every Blackberry model I've seen on the market so far.