SOYLENT GREEN (Richard Fleischer, 1973)
Takes the theme of eco-disaster and the consequences...
2001: A Space Odyssey (Stanley Kubrick, )
See multiple videos here or on the sidebars of the videos below.
Containing one of the most famous scenes in cinema:
An AI gone rogue ("I'm sorry Dave, I can't do that...")
Another legendary scene of space exploration...
Here's the 2014 re-release trailer
An analysis of why THIS is the MOST IMPORTANT SCI-FI FILM EVER MADE!
MOON (Duncan Jones, )
Important example of how convincing and effective LOW BUDGET sci-fi can be now; because of digitisation and convergence, VFX/SFX and CGI are accessible...
See multiple video features here.
Screen Junkies 'honest trailer' [strong language is censored]