You normally don't think of subtle and sci-fi anime in the same sentence, but that's what Serial Experiments Lain is. The atmosphere is slightly sinister all the way through, with beautiful animation. The story could be compared to the Matrix and the Sixth Sense, while the atmosphere and style is reminiscent of Twin Peaks, eXistenZ, and the end of Neon Genesis EVA.
The ending makes this clear that you won't be getting any easy answers.
The ending makes this clear that you won't be getting any easy answers.