Chatbots are all the rage, and run the gamut from useless to truly interesting. "And Chill" falls into the interesting category. Simply send it a note via Facebook Messenger and ask it what to watch on Netflix. It churns for a bit, and can turn out surprisingly good results -- as long as you're clear about what you want. And Chill only works via Facebook messenger (or you can send it a message via Facebook Messenger on the web) but once you do, you can either name a film that you liked, or you can tell And Chill what you'd like to watch. The key here though is that you have to be specific. The chat bot can understand a lot, but you'll definitely need to be able to explain what you're looking for. When I asked for "optimistic sci-fi that's still fun to watch", it asked me for examples, and then still spit out Solaris and Serenity, but that may say more about Netflix's catalogue than And Chill's searching skills.
However, if you're a little more concrete (or search more popular types of movies), you can come up with some great suggestions. For example, The Next Web asked for "an annoying protagonist, tons of nudity and truly bad acting" and turned up Burying the Ex and Glitter, which... well fit that description perfectly. Though it doesn't yet cover specific catalogues (though they are looking into it), And Chill states that it should still be relevant in Australia. Give the bot a try or learn more about it at the link below.