Number one for me is Seksmisja - Polish movie created under communist regime. It's a sci-fi comedy with I watched at least 50 times and it's still good 
Second is Alien and sequels. It became part of mass culture. The same on second place is Back to Future and sequels. Star Wars 3-6 is there with Mad Max.
Third place would be Fifth Element, Matrix, Contact, Stargate and Mr. Nobody,
nolan I'm not a big fan of (both) Blade Runners, but i like some scenes 
nolan sorry if the image is too big
The poster is a little bit HUGE 
@JoshStrobl is there a way to resize image or gif?
I like the Matrix movies, Fifth Element, Event Horizon, but they don't come close to my all time favorite. It's a movie, and a show.... Serenity, and the TV series Firefly. I to misbehave. #Browncoat
would gladly watch any day of the week in no particular order:
The Matrix (first one only)
Alien (first one only)
2001/ Kubrick
Clockwork/Kubrick (well not any day..)
ANY Mad Max in this order: Road Warrior, Mad Max. Thunderdome , Fury.
Escape from New York and The Thing (Kurt Russell double feature)
loved 70's relic A Boy and His Dog but can't find anymore
loved 80's relic Liquid Sky but can't find
Sunshine
12 Monkeys (terry gilliam)
and probably hundreds more....
....love spaceship settings, but really love my sci-fi post-apocalyptic
Brucehankins I like the Matrix movies
The Matrix (1999) is one of my favorites! (I don't like sequels)
A.I. Artificial Intelligence (probably one of the first sci-fi that I've watched)
I wish I'd written my answer before I read yours. It would have been the same. Agree 100%.
probably one of the first sci-fi that I've watched
The first one, wow! What about Back to the Future trilogy?
A.I. Artificial Intelligence (2001) - like it a lot!
Minority Report (2002) - another cool Steven Spielberg movie
Solarmass it was the best, really mind blowing for the time. What Hackers should have been 
laky you should watch Ex Machina. Another one of my favorites, it will really mess you up.
Brucehankins Did you watch The Animatrix (2003) ?
https://www.imdb.com/title/tt0328832/
A collection of nine short films featuring stories related to The Matrix (1999).
My favorite stories are: World Record and Program
nolan there's good series too, love dead & robots is one of them in my opinion, Battlestar Galactica (2005) is other, I growup watching it on tv, good times, the tecnology evolution in cgi is awesome.
Yeah, Love, Death & Robots was pretty cool https://www.imdb.com/title/tt09561862/
There are also some awesome sci-fi anime
I'm a massive Star Wars fan.
Solarmass I have not, but I will be now. I'm also a total weeb, so this is right up my alley.
Solarmass
Back to the future takes #1 spot on my list, I just didn't want to mention it two times in same thread.
I'll plan to take a look at all the sci-fi being mentioned here, I love sci-fi movies!
Brucehankins
You have a deal, I'll check it out ! 
Favorite Sci-Fi Movies:
Favorite Sci-Fi Shows:
Really wanted to like Farscape but just couldn't get into it.
JoshStrobl Riddick (2013) / The Chronicles of Riddick (2004)
I like the first one - Pitch Black (2000)
https://www.imdb.com/title/tt0134847/
Starship Troopers
Yes!
Altered Carbon (prefer Season 1 over 2, thought Joel Kinnaman fit Kovacs better)
It's in my "watch later" list for a long time!
The Expanse
Couldn't finish the 1st season for some reasons...
also in my top:
Terminator 2: Judgment Day (1991)
RoboCop (1987)
Solarmass Terminator
Yes, I forgot to mention the Terminator movies (except for the very latest), besides my Star Wars addiction. Good point!
