If you're unfamiliar with it, Cowboy Bebop started as a sci-fi television series (which is also fantastic), and later had this movie made to cap it off.

You don't need to have seen the show to watch the movie, and it's not a bad way to introduce yourself to the series, as it does a good job of introducing the characters and works as a standalone story.

Thought this would be a good one to post for the halloween theme, since the movie takes place during halloween :D