ACK!
I'm afraid to go pick up re-read those (they're packed away somewhere). I can imagine that they probably aren't like I remember them.
Something else that was quite surprising to me on re-read: Anne Rice's books.
I picked up "Interview with the Vampire" back in the early 1980s, when I was 12 or so. I thought it was a cool vampire story, although a bit heavy on the adjectives. (Does Anne really need to spend five pages telling us how the parlor was furnished?)
When I checked it out again two or three years ago, I was appalled that my mother had let me read such a thing.