Good movies aren't all created equal. While some benefit from great trailers and well-crafted marketing campaigns, other films suffer from a lack of promotion. Sometimes, a good movie is released at the same time as bigger, much-awaited production that overshadows everything else in theaters; it's never a good idea to schedule a movie's opening against the latest entry in a hot franchise or the biggest stars' latest blockbusters.
Whatever the reason, many truly great movies bomb at the box office, even if they garner positive reviews and become critical successes. Those movies often end up being re-discovered after arriving on home video or streaming platforms, and go on to become very popular with the very same audiences that snubbed them the first time around. These are some of the biggest box-office bombs of the last few decades — if you haven't seen them, they're all absolutely worth watching.