Sadly, I was unable to visit Marclay's The Clock at Paula Cooper this weekend, but I have heard a great deal about it. There are aspects of this concept that seem to be very relevant to what we are discussing.
Marclay is searching an archive of all possibilities in the scope of cinema and selecting scenes that correspond to his formula (in this case, the film - which runs 24 hrs - directly adheres to the viewers timetable through mandatory glimpses of clocks or watches).
He then parallels this scrambled archive with the time spent viewing it, binding each moment by the presence of the clock. This connection skews the perception of what is real, creating a highly ephemeral experience.