If your phone bricks by OTA, all your user data is pretty much cooked anyway. Read the thread I wrote here :
http://forums.androidcentral.com/verizon-fascinate-rooting-roms-hacks/85675-how-preparing-yourself-wipe-data-factory-reset-clockwork-recovery.html
It addresses some of the stuff. Some rules of thumb:
1. Make sure your contacts are stored on google. Meaning don't add contacts to phone. Add to google.com. That is one of the perks of Google Integration. Google Sync keeps your contacts, calendar and apps (at least which ones you've downloaded) stored in the cloud if you were to lose them.
2. If you lost your apps, when you re-login your google.com account, the market should remember what apps you had downloaded, and will let you re-download them. The in-app data is gone forever, sorry.
3. Root your phone. It takes 2 seconds, and it gives you a lot of ability. Namely the ability to use a good back up app, like My Backup or Titanium Backup root.
4. Figure out how to make a nandroid backup in a custom recovery. This is even better than above method. As it will copy , byte for byte, all your settings, system, and user data. Its the supreme backup and is stored on the sdcard.
You'll need to have ODIN setup with the Drivers etc, and know how to use it.
Charge your phone to 100% before doing this then,
1. Download this file :
cwm-recovery-ALL-3-30-FIX.tar
2. Load above file in PDA section of ODIN and flash (if you don't know what that means, you should do some reading first)
3. When complete in ODIN, close ODIN, Unplug from computer, put battery back in, then three finger press to boot to recovery.
4. In recovery use volume down button to navigate to backup/restore and press power button
5. Select backup
6. Let it finish then use the menu soft key to go back to main CWM page and select reboot system now.
There is a carbon copy of what your current setup is if something is goes wrong. If you need to restore it just follow the above process and select restore instead of backup.
For those with issues getting to Download mode:
1. Make sure you have the proper drivers installed.
2. Make sure your using the stock usb cable.
3. Don't use a USB hub, use a USB port in the computer.
4. Make sure the battery is pulled when trying to get to DL mode.
HOpe that helps all!