The Clairvoyant Zoopraxiscope

I suppose there are different kinds of insomnia, aren't there?

There's deeply unpleasant insomnia, in which you're uncomfortable allnight.

There's itchy insomnia, in which you have an itch you can't soothe, not with any amount of ointment or mind control.

There's musical insomnia, in which a line of music goes through your head over and over again, usually not something you are all that interested in.

There's happy insomnia, in which you're really excited about something that will happen, or could happen.

There's unhappy insomnia, in which you're deeply upset, and therefore can't sleep.

There's inexplicable insomnia, in which you can't sleep, but for no recognizable reason.

There's gastronomic insomnia, in which something you eat, or ate, keeps you up all night.

There's unwitting insomnia, in which can't sleep, but you don't realize it at the time.

There's sleepy insomnia, in which you just stay... rather sleepy the whole night, without ever getting to sleep.

There's argumentative insomnia, in which you argue, either with yourself or with another, all night long.

There's productive insomnia, in which you get stuff done, and keep getting it done, until morning.

There's TV insomnia, in which you just keep watching TV.

There's literary insomnia, in which you read all night.

And there's pan-insomnia, which is a combination of all of the above.