"Surban Kahndeep" was having trouble remembering his lines, so if you notice him staring at Pak Daddy's turban throughout the course of the movie, its because they were placing cards on it (out of the camera angle's view) so that Surban could read his lines.
When the antagonist and protagonist of the movie have a curry-eating competition, the two actors really did eat curry on the set that day.
The title of the movie all throughout pre-production was "Abulah Scared" however in post-production, after filming had wrapped, the producers changed the name to "Bollywood" because a rival studio had made a movie known as "Run Abdulah" which was released another movie was only two weeks prior to this film's release. The cast and crew blamed the lack of box office performance on the last minute change in name.
The idea of the president of Pakistan having a bullet-proof turban was inspired by a true story - a diplomat who wore a bullet-proof turban had made the papers in Pakistan after an assassination attempt which, of course, he survived.
Chunky Pandey's character was loosely based on Amitabh Bachchan.