Tropic Thunder
This was genuinely on par with memento and shutter island in terms of the storytelling layers and meta content. The whole film was so stupid but it knew that and still proceeded to mess with your mind and thinking in ways few movies do. The whole plot is genuinely so layered and complicated yet the film itself is so silly. This was actually one of the hardest movies to initially figure out and the whole time you attempt to do so the most goofy stuff is happening which just makes it such a crazy experience. I think it was perfect in what it was trying to do and I think that it was genuinely a masterclass in narrative building and plot direction.