Clickfree just added a new product to their lineup with the Micro SD card Traveler for BlackBerry. The Traveler is a 16GB MicroSD card with a built in application that automatically backs up certain files on your computer when you plug it in.
They plan on adding a 32GB version soon with prices going for $89.99 for 16GB and $149.99 for 32GB. The prices are a bit high but I am surprised Clickfree does not just sell the software to add to your own SD card… The backups support encryption along with multi-PC backups and will only copy over the files that have changed since last backup. Via Engadget