I think Martin Scorsese gave us a pretty definitive picture of Wall Street. "Wolf" is the story of our times. A classic for sure.
I have always been pretty baffled by "the market." Wall Street seems disconnected from the rest of the country, but their activity helps drive and define the broader economy. Day to day activity seems like some kind of controlled madness.
Paul Krugman reminds us what it's all about: "The market wants money for cocaine and prostitutes."
Oh yeah. Almost forgot! Makes sense!