I have lived in NJ my entire life. I have never tipped at a gas station, nor have I ever even heard of anyone tipping someone to pump gas!!
Wow, after reading thru this thread, I am ever so grateful for living in this state. I can't even imagine having to get out of the car and pump gas...especially if you're all dressed up...or if it's raining..or whatever!! Our state has the distinct "honor" of having the highest auto insurance of all 50 states, but boy, ya know what - I won't complain if I can sit in my car and have the guy just step up to the window and ask what kind of gas I want.
Way to go Garden State...oh and Oregon too!