So with Titanium Backup.... once you do the backup it saves the TAR files off to the default save dir. If for some reason you need to restore I presume you can just extract the TAR again...... or are we lacking the restore ability?
Titanium Backup will do the restore for you. They are saved in the default folder, and then when you click on an app (in Titanium) there will be a button to restore, and you can chose app only, or app & data.