The Thing - I AGREE
Event horizon - I DISAGREE - Paul Anderson has yet to make a great film start to finish and although this one started strong, like so many of his previous films, it fizzled out half-way through and ended in a heaping mess.
Blade Runner - I AGREE
Plan 9 from outer space - C'mon man you serious? - I DISAGREE
Planet of the Apes - I DISAGREE - It never lived up to its potential based on the rich ape environment and culture fleshed out in the book. It was made too early, before it could've been done justice via our CGI today - even Tim Burton blew it. This needs Peter Jackson attention!
Alien - I AGREE
Robocop - I AGREE
Star wars - I AGREE
Soylent Green - I DISAGREE - Like Logun's Run (which is currently slated to enter preproduction) it was made too early to do it justice beyond bad 70s designs and cheesiness.
Akira - I AGREE (but animation is in its own genre)
A clockwork - I AGREE
The day the earth stood still - I AGREE
The Road warrior - I DISAGREE - Although I will agree that this film set the standard for envisioning post-apocolyptic chaos I don't feel it was one of the greatest scifi films ever made.