So, which are you? Is it the same as your handedness? Do you also have issues with cameras because of which eye is dominant?
I'm left-eye dominant, but right-handed.
My D300's focus selector pad had to be constantly locked because I was always changing it accidentally with my nose. I don't have that problem on my D90, but I have hit the live view button a couple of times on accident—not enough to annoy me like on the D300, though.