When one gets the opportunity to watch a film directed by the Coen Brothers, there comes with it a feeling of uniqueness that cannot be matched by any other film or director(s). There are several aspects in the movie melting pots that are the Coen Bros. movies that show up frequently in most of their films. One major plot device that they use is the propulsion that Greed has on the story. Throughout their films Greed serves as a catalyst to launch the zany plot into full throttle. In Raising Arizona, the character played by Nicholas Cage succumbs to the greed of not having a baby, so he steals one. In Fargo, William H. Macy's character wants some of his wealthy tight-wad of a father-in-law's cash. Finally, in No Country for Old Men, the plot revolves around the suitcase full of money that is sought by the main characters. 

Another quirky twist the Coen's put into their movies is an "ultimate bad-ass". He shows up in Oh! Brother, Where Art Thou as the ever-hunting sheriff. Another example of the manifestation of evil is in Barton Fink, where John Goodman plays a metaphor for the devil. 

It's all of these components that make up a classic Coen Brother's movie. It's what makes them so darn good too. All i have to say is "keep it up!"