Quote from http://justinblanton.com/2008/01/gmail-blackberry-interface

I’m not quite sure when it happened, but the Gmail BlackBerry client now interfaces directly with the device. In other words, the BlackBerry knows when I receive an e-mail through the Gmail client. In fact, after you install the client, you’re given Gmail-centric options in the profile settings (e.g., you can define a particular tone for messages received through the client, etc.).

How sweat is that!

Go get it BB users, I have it and it rocks.

Real nice interface