I know enough about the films that I have a working knowledge of the main characters, events and situations that make up the films. I have Expanded Universe books, but I consider (most of) them inferior to the original films. I will watch the prequel trilogy if it comes on TV, but as a purchase, I wouldn't bother. I have a sporadic collection of action figures, and I buy a couple every so often when I see a deal. Finally, yes, I do remember when there was just an "original trilogy". That's why I came here.