I'm from NJ, and I also hate that accent. It gets worse the farther north you get and closer to New York, but it's down near me as well, to some degree. I never used to hate it but I was stationed in few other states for a long time, and when I moved back home last year I was disgusted by that accent and the terrible driving. (Both of which I never noticed before I left,)
And yes a lot of people say that stupid yous
Yous guys ready? You is the plural of you and needs no S, and I know teachers don't teach this one, but it develops anyway.
Again homebrewtalk is a wealth of information as I have always wondered about them teaching accents in school. I once asked a friend from Rhode Island if they just leave the R out completely when teaching the ABCs to children there. He had no answer...