One thing that I have remarked on here in Iowa and I have heard it elsewhere we say warsh for wash and fer instead of for. Some of these are regional.
When I was in jr. high we sent out a list of words to differant parts of the country to other schools and asked
Do you call it
a couch or a sofa? We say couch here usually.
a potato or a spud? We say potato
a trunk or a boot? Trunk is used here.
There were alot more but that is all I remember.