Gremlins is an American comedy horror film directed by Joe Dante, released in 1984 by Warner Bros. The film is about a young man who receives a strange creature called a mogwai as a pet, which then spawns other creatures who transform into small, destructive, evil monsters. It was followed by a sequel, Gremlins 2: The New Batch, released in 1990. In contrast to the lighter sequel, the original Gremlins opts for more black comedy, which is balanced against a Christmas-time setting. Both films were the center of large merchandising campaigns.
Source: Wikipedia, "Gremlins," available under the CC-BY-SA License.