B-movies are low-budget films that often prioritize entertainment over high production values. They typically feature simple plots, lesser-known actors, and can span various genres, including horror, science fiction, and action. B-movies gained popularity in the mid-20th century, often serving as double features alongside more prominent A-movies in theaters. These films are known for their campy style and sometimes unintentional humor, which has led to a cult following. Many B-movies, such as those produced by Roger Corman, have become iconic for their creativity and unique storytelling, influencing later filmmakers and genres.