This is a great application for Mac and Blackberry users, allowing you to sync your PIM data, emails (supports .Mail and Entourage and more) and install alx/cod files from your Mac to Blackberry.

To grab it click here, then click Download at "BlackBerry Desktop Software, BlackBerry device software, BlackBerry Enterprise Server™ software and related service packs.", there you’ll find it on top of the pull down list, follow it up to get your copy.

The documentation is located here

From PocketMac release notes:

*
What’s New In This Release?

*
Application Loading–Now, PocketMac for BlackBerry can install 3rd party applications and games directly from your Mac to your BlackBerry.
*
E-Mail Synchronization–You can sync your email messages from either Mail.app or Microsoft Entourage back and forth from your Mac and Blackberry.
*
MeetingMaker Support–With this new release, MeetingMaker users can synchronize data between MeetingMaker and your BlackBerry.
*
IBM Lotus® Notes® Support–You can now synchronize data between Lotus Notes and your BlackBerry handheld.
*
Intel Duo Mac support–You can run this version on both PowerPC and Intel Macs.
*
3rd Party Software Store–We’ve included special links to a PocketMac customers-only 3rd party software store with software that we’ve made sure will work from your Mac to your BlackBerry.
*
Support for the BlackBerry Pearl™–with this new version, you’ll be able to map the MicroSD memory card as an external USB Mass Storage device on your desktop, allowing you to transfer music, pictures, videos and much more.
*
Support for the BlackBerry 8700 and 8703 models–you can now sync all models of BlackBerry 8700 and 8703 handhelds.
*
Categories-Based Selective Synchronization–With this new release, you can synchronize specific categories of calendars, contacts and much more.*