After this film I can not imagine what Christopher Nolan will come up with next. I thought maybe he would begin sliding after his stunning The Dark Knight, but Inception does not fall flat. It is incredibly fast paced as well as mind bending all the way through. So much action in different realities at the same time, I was solemnly worn out after it was all over.
The Matrix
The classic! This may always be one of my top five movies. I've seen it at least ten times and it never gets mundane, it has such a smooth, cool feel to it. I find myself just looking up the fight bit between Neo and Morpheus on YouTube over and over again.
Star Wars (original trilogy)
Star Wars no doubt holds a special place in history with the sci-fi genre. I only have the original trilogy on here since I think those three movies absolutely spent plenty of time bettering story and mood, special effects were not the fundamental goal.
2001: A Space Odyssey
Stanley Kubrick's classic where the computer (HAL) starts to take on human characteristics is one that will be around forever and will perpetually be at the top of sci-fi lists, no matter how many competitors come along.
Blade Runner
And unquestionably we have Blade Runner, Ridley Scott and Harrison Ford's twisted vision of the future. 28 years later it is still a vision of what a real sci-fi flick is all about.
Back to the Future
Not quite the same feel as the other movies on this list, but nonetheless sci-fi, and still one of my favorites of all time. After seeing this I really wanted Michael J. Fox's jacket, and I wanted to take up skateboarding. This movie has 97% on Rottentomatoes.com, what dork gave this motion picture a bad rating?