Borderlands is terrible, I don't see how they let that out of testing with that field of view, it makes a LOT of people sick, it is the first and only time I have ever gotten sick from looking at something.
I do get sea sick as well though.
assuming you have the PC version, look up how to change the FOV in this link
http://borderlands.wikia.com/wiki/PC_Tweaks
link says default FOV is 70. I play at FOV 115. some images to show the difference. also, I believe the reason why the game uses a narrow FOV is due to consolification. console gamers sit farther away from the TV and apparently that makes the narrower FOV more tolerable.
FOV 70

FOV 115
