Mosquinha (1890)
This film lasts less than ten-seconds but it's so historically important that you can't help but really love it. Scientist Etienne-Jules Marey was doing research as well as experimenting with film and this here basically shows a fly taking off. Obviously with such a short running time you can't be expecting too much but for 1890 standards this thing is certainly an early masterpiece for the genre. Films were obviously still very young but watching this movie today it still manages to impress. The title and image makes it seem like the perfect monster movie!