I should not like Itachi, I really, really shouldn't... and yet I can't help it. He's all "Well, yeah, I torture my little brother, and I killed our parents in front of him, and I'd probably kill his friends in front of him if the opportunity ever arose, but I'm the only one who gets to pick on him. You touch him against his will, and you're dead." It's like normal sibling rivalry/love through a funhouse mirror, on PCP.

Also, Kisame is right; if you're in the right frame of mind, Itachi is fucking hilarious. :-)