I didn't bother to check out the cumulative list based on all the votes right away but, when I did, they annoyed me. Clicking ten times on the list split into 10s wasn't enough - they split the final ten into ten more pages. I accessed the pages via google's cache and present them here in case you don't want to pump up their ludicrous page hit counts at the expense of your time any more than I did. Ridiculous. A couple of pages, okay. 19? Gimme a break.
10 The Empire Strikes Back (1980)
9 The Terminator (1984)
8 Metropolis (1927)
7 Brazil (1985)
6 Star Wars (1977)
5 Aliens (1986)
4 Close Encounters of the Third Kind (1977)
3 Alien (1979)
2 Blade Runner (1982)
1 2001: A Space Odyssey (1968)
Anyway - based on films I have that didn't make the list, I'd nominate The Brother from Another Planet (1984), Destination Moon (1950), Men in Black (1997), Wargames (1983) and, obviously, Europa Report (2013) as a top five of films that, while maybe not all "great", are at least as good as several that did make the list. (Honorable mention to The Rocky Horror Picture Show (1975), though I'm not sure what to class that as.)