Game of Thrones is good, especially if you like fantasy. A lot of the major plots from the book series are in the HBO series but, of course, a lot of the minor stuff from the books is left out. HBO could do better in this department but that would probably make the series drag a little bit. There is enough material in the books to run a 10-year series with at least 20 episodes per season. The books are very dialog-rich. Lots of sequences in the books that covered a lot of pages got little time in the series while stuff that only got a page or two in the books, like the tournament at King's Landing, got a whole episode in the series. I'm actually going back and re-reading the first two books since it has been a while.