Westerns and science fiction have a storied relationship. Look no further than "Star Wars," which was born from George Lucas' desire to make a Western set in space. Gene Roddenberry had similar ideas ...

Some of the greatest science fiction in the Western film canon — and also Gladiator ...

Steven Spielberg knows aliens. Though he hasn't made as many UFO-centric movies as you might assume (he's made more movies about WWII than he has about extraterrestrials), the director behind Close ...