The Fellowship of the Ring. Goin back to when i was a kid, got all the LOTR books in one bind on my birthday. Read it many times since then. When they announced LOTR would come to the movies, i was very surprised, but i didnt get my hopes up. I thought they couldnt make a LOTR movie good. Because it had so many details, characters and length; It was mind-blowing! I couldn't sleep for nights.
Biggest dissapointment would be Matrix Revolutions. Reloaded was preety good though.