Actors who rejected films and later on felt guilty

For every film, the director chooses an actor but it depends on the moods of the actors whether they wish to do the role or not. It depends on the choice, mood, taste and wish of B-town celebs whether they want to accept the offer or not. In film, 'Munnabhai M.B.B.S.', the first choice of Raj Kumar Hirani for the role was King Khan 'Shah Rukh Khan', but his health did not permit him to do the role so went to Sanjay Dutt, who perfectly performed it. Here are the list of some actors who were the first choice of the directors but the roles were turned down by the actors.