Ever find yourself falling in love with a show, and then having it unceremoniously ended after only a season or two? If you love sci-fi and fantasy TV as much as we do, chances are that this has happened to you on more than a few occasions. In some cases, we find out about these great shows after they’re already gone and wonder “What if we’d seen it when it was on? COULD WE HAVE SAVED IT?!” Here’s a list of fifteen classic sci-fi and fantasy shows that we mourn to this day.