I worked on a project for him. He was just an awful human being, but he was crazy detailed oriented... and the devil is in the details. IMHO, his greatest strength was that he knew how to sniff out and monetize others' brilliant work. Work that would otherwise go unnoticed. Some people call that parasitic, but I disagree. There are many brilliant projects that go unfunded because the people with the purse lack vision and imagination.
EDIT: Typo and grammar fixes after I found my galsses.
Steve Jobs also didn't believe in washing his hands or taking showers. He would wear the same clothes way too many days in a row, didn't wear deodorant and according to people who had to work with him he smelled BAD. That man was not right in the head.