My mom never knew the difference between Star Wars, Star Trek, Battlestar Galactica, or any other sci-fi movie/show. I once made a cylon centurian costume (years ago, it wasn't very good) and she refered to it as Darth Vader all the time. I tried to explain to her that Darth Vader was not a generic name for a robot type thing, but she just didn't seem to get it. She would make comments like, "you always used to watch Star Wars on TV...". And I would say, "when did I watch Star Wars on TV?" And she would say, "all the time. It was on every week". "You mean Star Trek?" I would ask. "I don't know, I guess so" she would say, "it had spaceships in it". And I would just roll my eyes.
Yes, I did used to watch Star Trek when I was quite young. Before Star Wars it was the only show I found interesting (yup, I'm old enough to remember watching shows from BEFORE Star Wars!!). I kinda lost interest in it though... especially after they started getting into all the spin off shows. Boy, that got tired real quick.