I ported my Windows Mobile app "PhoneLog" over to my BB Storm. The app basically logs all of your phone call information to your device's calendar so you can sync it back with whatever you want and view your call log data. I've never really had a use for it, besides using it as an infinite call log in my google calendar, but from the emails I've gotten lawyers and other people who bill by the minute have found it useful.
Currently it only works on 4.7 devices, but as soon as I take the time to download an older SDK I'll have it working on other devices. You can get more details from here: PhoneLog Blackberry
and/or download the application from mobihand.