http://www.openculture.com/2010/07/tarkovksy.html
A brilliant Director in some arcane rights issues has all his films released to public domain, and then taken down… and then put back up. This will highlight what existed at a specific time.
The above link will keep you posted as to what is available.
Clip from “Stalker”
Sacrifice
Voyage in Time
More free movies from Open Culture