I still remember the very first time I saw the 1979 film Alien. I was a teenager and the lead actress, Sigourney Weaver, the film's story, and its cinematography all just blew me away. Now after having read some science fiction books (Odyssey, Asimov's Foundation trilogy, et al), and more recently, having seen more science fiction films (Matrix trilogy, Abyss, Contact, etc), I still believe that there are only a few things (read one) which can take you on a joyride as good as a well written science fiction story.
I just finished watching the 2010 film Predators. If you remember the first Predator film was released way back in 1987. Even if you are not a Schwarzenegger fan you'll have to admit that the storyline and execution were something really special for that period. I like the fact that over time the Predator sequels have preserved the original properties of the beast/alien. The Predator's protective suit and its physical appearance have remained largely unchanged. This of course gives the alien character a life of its own.
After a long drive today I fixed myself a drink and started watching Predators. I had low expectations for a sequel but I was not disappointed at all. So here is my advise - if you liked the original Predator or for that matter if you play any of first person shooter games on your XBox or PS3, pick up the film DVD and see it. Just stock up on that one thing that is absolutely necessary for both making and appreciating a good science fiction story. Imagination.