'PK' is the toughest role of my career: Aamir Khan

Superstar Aamir Khan, often touted as Bollywood's perfectionist, says his role in upcoming comedy-drama 'PK' is one of the challenging roles of his more than two decade long career. The 49-year-old actor released the Rajkumar Hirani-directed film's first trailer on the occasion of Diwali. "I have been working for the last 25 years and 'PK' is by far my toughest role in my career. I have not blinked in the movie. We had discussed a lot about shaping up my character but we felt everytime that something is missing," Aamir, who would be seen in a quirky avatar, said.