I've also found that there is little tolerance among mundanes for referring to the first Star Wars movie as "A New Hope," much less ANH. Either will result in blank stares, followed by incredulous laughter. Word to the wise.
Actually, I saw Star Wars opening weekend, and have NEVER referred to it as either A New Hope or ANH. It has been and will always be Star Wars.
Agreed, the movie as originally shown is named "Star Wars". "A New Hope" is just the beginning of George's descent into the madness of fiddling with the films.