In between watching that, I was also watching Rushmore. That took a couple of days, too.
I never noticed it before, but the two movies share one very similar bit of dialogue:
Jake Gittes: How much are you worth?Rushmore:
Noah Cross: I have no idea.
Jake Gittes: Over ten million?
Noah Cross: Oh my, yes.
Max Fischer: How much are you worth, by the way?Both of these conversations come pretty deep into the movie, at a key point in the plot.
Herman Blume: I don't know.
Max Fischer: Over ten million?
Herman Blume: Yeah, I guess so.
Coincidence? I don't know. But the main female character in Rushmore has the same last name as the villain in Chinatown: Cross.