I saw the movies before I read any of the books, and I must say, I thought they were the best movies I had ever seen at the time.
Now after reading the book, they just dont have that much of an impact on me anymore. I did buy all three EE's not too long ago to see if they would bring back the good ole' lotr feeling, which they hardly did.
I almost never see the movies anymore, although I still think they're good. (From a blockbuster point of view

)
It's kinda sad too, because whenever I read lotr, I always get movie images in my head, such as Frodo looking younger than he really was in the book.
It's hard to 'live' the book in my mind, if you know what I mean.