1980s: 1. Videodrome (1983)
2. Brazil (1985)
3. Threads (1984)
4. Blade Runner (1982)
5. Repo Man (1984)
6. The Terminator (1984)
7. The Fly (1986)
8. Tetsuo: The Iron Man (1989)
9. The Thing (1982)
10. Tron (1982) 1990s: 1. Delicatessen (1991)
2. Hardware (1990)
3. Event Horizon (1997)
4. Total Recall (1990)
5. Jurassic Park (1993)
6. The City of Lost Children (1995)
7. The Matrix (1999)
8. Open Your Eyes (1997)
9. Dark City (1998)
10. Alien 3 (1992) Combined: 1. Videodrome (1983)
2. Brazil (1985)
3. Threads (1984)
4. Blade Runner (1982)
5. Repo Man (1984)
6. The Terminator (1984)
7. Delicatessen (1991)
8. Hardware (1990)
9. The Fly (1986)
10. Tetsuo: The Iron Man (1989)
The '80s was a much stronger decade for sci-fi in my opinion.