I have a 3 year old long haired tortie (without any white). I have had cats all my life and have
never encountered any puss quite like my Fifi.
She is an out and out psycho. Crazy, evil, schizophrenic. All my neighbours are terrified of her. As is next door's dog. She tried to murder my cousin by swinging on her scarf and nearly strangling her
She jumps on your back, attacks your feet as you walk past her, grabs your legs with her paws and tries to pull you back if you walk away without feeding her.
My vets seem to draw straws for taking her appointments.

A 'headstrong wee madam' was what the last vet called her as she tried to rip off his hand....
Don't get me wrong. She can be very affectionate. She appears on my knee for a purring session which usually lasts about 30 seconds. Then she bites me.
I've actually got a cat book in which it says that torties are known for their feisty natures. It says torties with some white are actually calmer. Dunno how true that is. 3 vets have now told me that in their experience, torties are all bonkers.
Anyway, I love her to bits. She may be a nutter but she's my wee nutter.
And she's a gorgeous looking puss into the bargain. Here she is. Just after she demolished my nearly completed 1500 piece jigsaw
http://i51.tinypic.com/2znxta0.jpg