There are several reasons why Mistress America may be considered a wonderful movie. It doesn't take itself too seriously, and has a very sophisticated sense of humour. The main actors all have exaggerated characters that always behave in certain ways (kind of like the cast in The Office) -- and the actors play these roles to perfection.
The writing and delivery of dialogue in the climax of the film is particularly amazing, with fast, witty exchanges filled with little jokes. Yet, the movie vacillates from hilarity to melancholy without warning the viewer, which makes the film all the more special.
The depiction of and commentary on NYC, youth, etc. is all spot on, making this movie worth the watch.
Finally, the soundtrack is excellent too, giving the movie a very alt/indie feel.
Many negative reviewers sadly fail to appreciate the sophisticated writing and humour, along with the truly wonderful job that the lead actors have done in this unpretentious flick.
