A box office smash is a movie that has been incredibly successful at the box office, making a lot of money. A HIT is a movie that has done well, but not as well as a box office smash. A boff is a movie that has done very well at the box office, but not as well as a HIT. A megahit is a movie that has done exceptionally well at the box office, making a lot of money. Finally, a Star Wars movie is a movie that has done extremely well at the box office, making a lot of money and often becoming a cultural phenomenon.