modern directors should study this classic Rashomon is clearly one of Kirosawa's best films, although most would probably claim Ran is top of the list. The basic story is about conflicting testimonials of a particular event, but truely deals not with the audience trying to determine who is telling the truth per se, but rather how everyone "remembers" events to their own advantage.
The even in question concerns a woman who has been attacked by a roaming bandit, and how she, her husband, and the bandit react in the aftermath. If the film were to be remade today, it would probably star Gretta Scacchi or someother busty beauty, the rape would be graphically displayed as the bandit rips off her clothes, paws at her tits, and humps her on-screen. The rape in Rashomon was never actually shown, but inferred, and was very obvious. The terror and violation of the woman had to be imagined by the audience making it far more involving than simply passively watching it on-screen. Film directors should take note as to how to properly engage an audience.
The acting may not transcend as well to modern audiences, though. Those who regularly view older (foreign) films will recognize and accept the acting style, but others may well find it over the top.