I watched the first Twilight movie (before I started reading the books) and I thought the movie was really lame.. like I just wanted those hours and minutes of my life back (it was that bad) but after reading the books, I became addicted to all things "twilight", movies included. Watching the movie first (before the books) helped to give me visual images of the characters, and i was able to connect better with the story, cause the books are way more descriptive. So i guess the books make the movies less lame ?? If you get my meaning.
I can understand why people who haven't read the books think Twilight Movies are really bad, but once you read the books, I believe it gives you a better understanding of the characters and what they are thinking and feeling in the movie.
All in all, I love the books better, because they helped me to love the movies :)