Forget It Jake, It's Chinatown

As The Guardian observes today, Joe Mantell, sadly, has died.  As they also note, for a little-known character actor, he got to say some very famous movie lines.  Arguably, his "forget it Jake, it's Chinatown" is the greatest last line of any film, barring perhaps "I am having an old friend for dinner" and "Nobody's perfect", so he was lucky - but also talented, he imbued that brief sentiment with so much ambiguous darkness it carries a whole social vision of hell on earth with it.