Strings -- Film Description:
"This film paints a vivid portrait of two strangers intimately linked by the shared ceilings, floors and plumbing of their apartments. When an unexpected and pressing problem arises, however, these comfortable connections are compromised. Produced using a painstaking animation process that involves painting on glass and stop-action filming, Strings is a film as beautiful as it is haunting. Film without words."
-- National Film Board of Canada

Source:
National Film Board of Canada. "NFB -- Strings/Cordes" National Film Board of Canada. http://www3.nfb.ca/collection/films/fiche/?id=18431.