A couple of years ago I came across the American Film Institute list of 100 years 100 movies (PDF), and off an on I have attempted to watch all of them. The list I used apparently has been updated, they now have added new movies including Toy Story.
Back when I added the movies in Netflix not all of them were available but I believe there were about 80+ of them. I watched some when I was younger, so it was nice to be able to watch them again with a greater appreciation for what they have to offer.
Last few movies I have watched are: The Miracle Worker, A Place in the Sun, Easy Rider, My Fair Lady and Sweet Smell of Success.
If you ever get a chance you may want to watch a few, it is interesting to see how some things just never change, while others do.