Oh so if I was to say.... "Evidently Mr. Ringo's an educated man....now I really hate him!" or "Skin them smoke wagons and see what happens" you'd know what I was talking about and the 4 great actors involved in these scenes.
I realise the question isn't for me but this guy ain't replying so I'm going to take a shout: Val Kilmar, Harry Carey, Kurt Russell and Charlton Heston?
Ok, I'll bite. What's number 1? (if someone hasn't beaten me to asking...)
OK, first - I loved District 9 for one of the same reasons you did - it caught me off guard. Watched it a few times since and was equally impressed. Now I know that some people really DON'T like it, so I have come to reconcile that it's one of those movies that's either really liked or hated - or possibly not 'hated' but suffers from the "I don't know what people were raving about" syndrome. Sharlto Copley is excellent in it.
I am fairly individual in my movie tastes, in that I'll watch anything to some level of enjoyment. If it's crap, it's crap but I'm not going to lose sleep over it. I might go as far as to say "that movie was terrible!" or whatever but I rarely wish for my time back. In fact, I actively seek out bad movies sometimes. You occasionally discover hidden gems that way.
But basically, I have two criteria when watching movies - 1) you have to be able to suspend your own belief and 2) you need to be ready to believe anything. Now, they might sound like they're the same thing but they're slightly, and importantly, different. And it's the responsibility of the viewer, not the movie or the movie maker, to possess those qualities going in - otherwise you set yourself up for disappointment. It's not their fault for making a crap movie - it was my choice to roll the dice and take a chance on it. I'm much happier with this understanding.
On the topic of District 9, I am one of those that HATED the movie. The previews made it look good, I went to see it in theaters, and I walked out 3/4 of the way through