One of the times I went to a Colin Hay performance (ex Men At Work singer, born in Scotland, moved to Australia when he young), he was joking about how Australians often put "or" at the end of sentences. An example he gave was standing in the airport with all the band's gear and someone might come up to you and say "Are you in a band, or...?" "Are you going to Sydney, or...?" I've never heard anyone do this myself, but his description of it was funny.
In Pittsburgh, PA and the surrounding areas we called soda "pop." When I moved to Los Angeles I had to get used to saying "soda." Also, the ATM was a "MAC machine" It stood for Money Access Center. Shortly after moving here I asked someone where a "MAC machine" was and she looked at me like I had two heads. I had to train myself to say ATM. One thing in Pittsburgh that makes me cringe is the tendency for people to say "Yinz." For example, instead of saying to a group of people "Are you going to the movies?" someone might say "Are yinz going to the movies?" It's generally a blue-collar thing though.