All of District 9.
No ****, I loved every second of that show.
But if I have to single out a moment, it would be when Wikus catches the RPG (you know the one, as it was used in nearly all the trailers and spots). I was lucky enough to attend a screening at the Embassy -- a screening introduced by PJ, no less -- which was full of people who were pretty freakin' excited to be seeing it before the rest of the world. We were laughing for the first couple of reels, gasping for the next few, then cheering and hollering during the last act. But I clearly remember that said moment, how there was complete silence when that sequence started, then the audience erupting when he reached up and caught the RPG. I'm talking popcorn flying through the air (which was free, by the way), people standing in their seats... you know, pandemonium. Without a doubt, one of the most memorable cinematic moments in a long, long time. It was beat-****ing-perfect, that's why. It doesn't happen often, but when it does, it is absolute magic.