This film is a very smart and very character-driven road movie, which explores the surprisingly interesting and deep world of wine. It also spends a lot of time exploring the two main characters' bad personality traits, and the effects on the two female secondary characters, in a surprisingly human and deep way. The acting is absolutely brilliant, the writing is subtle yet precise, and the cinematography does justice to the beauty of Californian wine country.
A great and intelligent movie to watch if the somewhat tame subject matter doesn't scare you.
In a sentence:
Incredible acting and great writing are aplenty in this very deep and emotional character piece.