Inception
After this movie I can not imagine what Christopher Nolan will come up with next. I thought maybe he would start sliding after his amazing The Dark Knight, but Inception does not disappoint. It is incredibly fast paced and mind bending all the way through. So much action in different realities at the same time, I was seriously worn out after it was all done.

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 boring, it has such a smooth, cool feel to it. I find myself just looking up the fight scene 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 because I think those three movies really spent a lot of time developing story and mood, special effects were not the main goal.

2001: A Space Odyssey
Stanley Kubrick's masterpiece where the computer (HAL) starts to take on human characteristics is one that will be around forever and will always be at the top of sci-fi lists, not matter how many competitors come along.

Blade Runner
And of course 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 true sci-fi movie is all about.

Back to the Future
Not quite the same feel as the other movies on this list, but still 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 idiot gave this movie a bad rating?