It seems our collective cultural memory is ever more truncated. Who of us can remember the Best Picture winners from recent years? Or if you watch the Oscars more for the fashions, who can remember what anyone wore? Memory can be as untrustworthy as it is beloved, as fragile and dangerous as it is indispensable. Perhaps because our frantically paced, fragmented contemporary world reinforces the tenuousness of recollection more than ever, many of this year’s films seemed to wrestle with that very theme.