Bhoothnath (movie, 2008)

Banku, his mother, Anjali Sharma and father move in to their new house -- the Nath villa, unaware of the fact that the house is inhabited by a ghost. It is learnt the ghost is not too happy with his new housemates. But what the ghost is not prepared for is his unlikely friendship with Banku. Now Banku must uncover the reason why his ghostly friend is stuck and help him to attain salvation.