For anyone who gets sick from the FOV the community has a app called Borderlands Config Editor that saves all the hassle of constantly going into the config file and changing the FOV whenever it gets reset back to the steaming pile of shit it defaults too.

Its just an interface for all the stuff you can edit manually, but it certainly eases the process and makes it a lot less of a hassle when the game decides, ehhh I am going to reset your FOV and make you puke.