In Terminator 2: Judgement day, Cyberdyne made the robot that became the terminators with a chip from a terminator from the future (from the first terminator)

where does the bouncy elastic bassline in Fingers 'Can U Feel It', 'Washing Machine' etc. come from? just an SH-101 tone or similar? such a great sound

Not similar. An SHS-1000. Advanced prototype.

http://www.overthinkingit.com/2009/05/14/i-will-always-have-been-back-toward-a-grand-unified-theory-of-schwarzenegger/

they didn't invent themselves, they were ~always there~

Very late to this thread but it's called a bootstrap paradox. Doctor Who did it with a fez.

The thing with the arm that rob bolton mentioned 18 years ago is something that's always bugged me. It seemed like a clear setup for a sequel, but none of the sequels ever used it.