Rocky
Here’s a film that needs absolutely no introduction, even if you haven’t seen it before. Sylvester Stallone wrote Rocky when he was at the lowest point of his career. In fact, he had to sell his dog to help turn Rocky from a screenplay to an actual film, but don’t worry! He purchased his dog immediately after the film’s success.
Rocky had a starting budget of under $1 million, which was a lot for a movie that hardly any studios believed in. However, it would eventually earn over $117 million from ticket sales, and today, the Rocky franchise has grossed over $1.7 billion!