Steve Jobs. Martha Stewart. Some bosses aren't in it to be loved. Here's how that works, and how it doesn't.
Gave employees a higher purpose but was unsparing about their shortcomings.
Embraces creative conflict but intimidates employees into pulling all-nighters.
Produced hits such as The Social Network and School of Rock; once fired an assistant for bringing him the wrong muffin.
Made a fortune on her attention to detail but has trouble ceding control.
Core belief: "Winning is the most important thing in life, after breathing."