Leadership can be hard to define and it means different things to different people. In the transformational leadership model, leaders set direction and help themselves and others to do the right thing to move forward. To do this they create an inspiring vision, and then motivate and inspire others to reach that vision.
To drive a team and lead to task which looks like impossible and very hard to achieve but, when you do that then it is the leader who plays very crucial role. Aamir Khan was a perfect example of leadership style and leading a team in such flamboyant way is just commendable.