I would do something like this despite the time involved. In both cases it eas a few years ago, but I caught both the three Robocop movies, and the three Matrix movies back to back on two rare occassions that I had a lot of my handle and the house to myself. Seeing the three Matrix movies in succession made me like them, and the three Robocop movies were the same. However, the Harry Potter series is very disjointed because of the changing of directors. Each brought his own style to the movie and it make seeing them in order lose the appeal a little bit, but I just feel like it would be an interesting event.