Serial Experiments: Lain (1998)
There's a lot to like about Lain. It's weird, really weird. You have to pay attention and even then, by the end, you may not be entirely sure just what the hell happened.
A comparison to VIDEODROME would be fair. They're both covering similar territory. It is nice to see anime as ambitious as this, you don't that often. Paranoia Agent comes to mind.
Definitely not for the casual anime fan, but worth it, even if you're left scratching your head by the end.