I love science fiction.
I must preface by saying I prefer novels to film or television. I still very much enjoy Star Trek on occasion, if only for the novelty the ideas and the halfway decent storytelling. I also enjoyed Battlestar Galactica, but have not heard of Browncoat. Firefly is one of my favorites, as well. I am also happy they did not drag my favorite characters through too much narrative mud.
I know plenty of novels. Philip K Dick is an author who comes to mind as the most creative, then Robert A Heinlein comes to mind as the most famous. Frank Herbert created Dune, which would go on to inspire Star Wars and countless others in the sci-fi genre at large. His other works are thousands of times better than Dune, his most famous work. Then we have Isaac Asimov as a runner-up for most famous sci-fi authors, if only for reaching a wider youth audience.
Many of my favorite books became films, such as Minority Report, but were not always done with the same storytelling genius as the novels. Some more Philip K Dick movies would be A Scanner Darkly and Blade Runner, the latter of which was inspired by the book Do Androids Dream of Electric Sheep.
In every case, I must recommend reading sci-fi as opposed to watching it. If you love the genre, then you must know it is quite infinite. Do not let Hollywood limit your experience or temper your expectations!