Satish Shah's comic genius shines in Main Hoon Na, but a particular spitting scene with Shah Rukh Khan proves to be a challenge. With multiple retakes, Shah embraces his newfound title as the "spitting cobra" in this hilarious behind-the-scenes anecdote.

Amitabh Bachchan may be one of the biggest superstars of the film industry today. But he has faced some mega challenges.