Guess I should make a comment in this thread. We have a collection of something over 2000 titles. Kind of my wife's hobby, most of them are from the 2nd hand stores where she buys them by the handful for $10 or $20. Also the bigger it was at the box office the less likely you are to find it on our shelf, not a strict rule but a general guideline. She looks for indies for the most part, Horror and foreign are her speciality (naturally foreign Horror is optimal!) we have a lot of comedy also. It is the rare movie that I will watch twice, there are some (e.g. Memento and Mulholland Dr) which need multiple views just to figure out what is going on. I have watched all season of Dr Who a couple of times, I have the 6th season of The Sopranos waiting to watch but really should watch the first 5 over again to just refresh what was going on. This, however, is way to big a commitment in time to even consider.
There is so many different ways to appreciate a movie it is difficult to come up with a favorite. How about a good movie you may not have heard of. Give Lars and the Real Girl a watch. We watched this over a year ago and I still remember the title, that must mean something.