I always go see the movies with my family members who haven't seen it yet...that way I have a good excuse to see them over and over!
But, instead of them asking me questions about the story...I was always whispering information to them about the "extra" stuff that PJ couldn't possibly have put into the film! I figured that they needed to know this stuff so they could appreciate just how incredibly rich Tolkien made the story!
More than once, my husband told me to shut up so he could just listen to the movie!!!