Finally got to the end of all 13 episodes of Serial Experiments: Lain. No doubt about it, it's superb and well worth the time. Next time I'll have to watch it in a more compressed time scale - I see from the blog I started on 31st August!
And what's it all about? By the end there are hints, but not everything. Lain is from the Wired ( the evolved Internet), a programme given a body to exist in, and bridge into the real world. By the end she's outwitted her inventor, rewritten history (literally) so that nobody in the real world knows she was ever there (including her creator), and is having very Contact like discussions with a higher plane in the form of her father. And there's those odd little cryptic bits, like the suggestion that the Wired is in fact a part of something larger, and the asteroid.
Just watch it.
***Imported from old blog***