Top 10 Best Sci-Fi Movies You've Probably Never Seen

Somebody started a new Facebook page featuring Retro Science Fiction, so I decided to see what YouTube had to offer. A lot, as it happens. Of the Top 10 Best in this list, I have seen a couple, only a couple. One of them, Logans Run, is my top candidate for a remake. Although I don't think there is an adequate replacement for Peter Ustinov, just about every other role could be filled more adequately with another actor and the special effects could use some "freshening up". However, the story itself is well worth a remake. What movie would you like to see remade? SciFi, that is...