Good managers are essential to any successful organization. An exceptionally good manager achieves a hard working, productive and effective workforce that punches above its weight in its performance.
An example of a good manager is my dad. He's always helping his employees and motivating them to do an excellent job. He listen to people's ideas and respect them.
An example one a bad manger is Buddy Ackerman (Kevin Spacey) is perhaps the most overtly abusive boss in movie ('Swimming with Sharks') history, as he pummels his meek assistant (Frank Whaley’s Rex) with one insult after another. He plays as a rude manager, who doesn't like to hear other idea besides his.