With almost 100 years of sci-fi movies it is getting harder and harder to choose the best ones. I have seen a lot of them and here are the Top 10 Greatest Sci-Fi Movies in my opinion.

The Matrix
One of the most original stories and scripts in sci-fi history. The coolness factor and the breakthrough effects of the movie makes it a cult classic.

Inception
This movie will take you on a ride that you may want to get off of half way through. It is so intense it almost becomes hard to watch at times, but you are not able to look away!

Terminator 2: Judgment Day
Terminator was a great movie, but Terminator 2 is one of the best sci-fi movies ever. It overshadows the original in every way.

Back to the Future
Such a classic achievement in film making. If this movie is ever on TV I will stop what I am doing, sit down and watch it.

2001: A Space Odyssey
Stanley Kubrick's masterpiece. Creepy to the core, the mood that Kubrick creates is a cross between panic and paranoia.

Avatar
Even with the hype Avatar is a groundbreaking film based on current technology. Definitely worth the attention it got.

Donnie Darko
A mind bending story that circles back to the beginning of the story where you'll be asking yourself, what just happened?

Star Trek (2009)
This is just a fun movie and a whole new take on the classic series. With new directing, storytelling, effects, and a contemporary edge Star Trek is not just for Trekkies any more.

Star Wars (original trilogy)
Star Wars is and will always be on the top ten of every sci-fi movie list, and with good reason. Star Wars was such an innovative and break through movie at the time it came out. The acting, the story and the effects were all Oscar caliber.