Firefly and other TV series

Richard Castle, Jessica Pearson (from Suits), and that dude from Suburgatory(I don't really watch Suburgatory, but my parents do, so i catch some of it then) all in one show??? Whhaatttt??? I've heard of TV series Firefly before and knew that the cast included Nathan Fillion, the star of ABC's hit TV series Castle. I was aware that it was a science-fiction show but I was not aware that it only lasted one season, in 2002. I also did not know that it was that highly thought of, with a rating of 9.2 on IMDb. I've heard my brother talk about the show before, and I think he has watched it all, and I think I need to know too.