Terminator 4, 5, and 6 may or may not be timeless classics, but at least the original Terminator is being recognized for its enduring awesomeness by the National Film Registry.
The Registry will protect Terminator and 25 other films, to protect them from the deterioration that otherwise strikes nitrate and acetate-based films. Also on the list of films targeted for preservation: the original 1933 Invisible Man. [BBC]