I liked all of the Harry Potter books, I only saw the first couple movies though. GOT is really good. But - I don't do well with TV shows since you have to wait a week in between, and then months in between seasons. I do better chain watching entire shows (did this with Entourage, LOST, and with what we have so far of GOT). I agree with the rest though.
My Dad used to watch the Star Trek TV shows, those sucked enough for me to never be interested in seeing the movies. I saw the first Star Wars, I think the second too? Not sure. Anyways - I saw half of Episode 1 and I turned it off halfway through and haven't seen a minute of Star Wars since. I'm not sure if I ever saw Fellowship of the Ring. I know I've seen Two Towers, because the Helm's Deep battle was definitely cool - but I never saw whatever the last one is, nor the Hobbit trilogy (I did read The Hobbit though, but wasn't enticed enough to read the LOTR trilogy).