Which movies are really "surprise hits"?

[PhysicalMediaMaestro]

A lot of times you hear moviemakers/movie studios claim that a certain movie was a "surprise hit", meaning that they had no idea whatsoever that it would make so much money. When I hear those claims, I never believe them.

For example, Warner Brothers claimed that the 1996 movie "Space Jam" was a "surprise hit". My response was: Really? You cast the greatest basketball player to walk the face of the Earth (Michael Jordan) in the lead role, and you have him doing what he does best alongside the Looney Tunes characters at one of their peak points of popularity (the original Looney Tunes cartoons were often shown on Saturday mornings on ABC after other Saturday morning cartoons during the 1990s) and you're shocked that the movie made so much money? Why don't I believe you?

But maybe I'm wrong. Maybe some movies were so successful that everyone was genuinely shocked by how successful they were. If you know of any movies that really were surprise hits, I would love to hear your stories. Have a nice day and a great weekend.