Being a pedant I would question - if SF is about probable impact of science and technology on our society and us ourselves - whether all those films are really SF. Star Wars sure isn't SF (sorry Darth) but some of those fall more into the 'kinda' that really.
TBH Terminator 2 is probably way too high, Star Wars shouldn't even be in a list like this and Wrath of Khan (much as I love it - KHAAAAAAN etc - ) probably shouldn't be either.
Top 2 are spot on although arguably 2001 should be top but I love them both so much who cares around 1/2. But Moon, etc. are all far better, more specific SF films than say Terminator 2, which is more of a fan favourite (a favourite of mine, too, but not that high against real, hard SF films).
Lists, eh, you can never agree with them!
EDIT: speaking of which, as others have said films like Gattaca should be on that list instead of Terminator, etc.
Try to be reasonable... its easier than you think...
