Easy A is a surprisingly good movie, and I would have to say is one of the most underrated comedies of 2010.
The cast is wonderfully amusing, and Amanda Bynes makes a wonderfully easy to hate villain, if a little bit under developed as a character.
The main character of Olive, played by Emma Stone, is easy to relate to and we really care about her as she goes through the struggle of at first embracing her sordid reputation, then becoming hurt by all the negative attention it gets her. She's a very funny and sarcastic character, but can also show real emotions and bring us on her journey with her.
I do wish we saw a little more of her love interest, Todd. He shows up a few times in the film, but the film never really lingers on him long enough to give us an idea of his and Olive's relationship, other than we know they once almost kissed in 8th grade. The same goes for Olive's best friend Bree, who does have an important role in the movie (she's the one who Olive first lies to) but aside from a few angry glances and cross words, we don't really see her personality other than being loud and boisterous.
In the end, though, this film is really about Olive, and she carries the film extremely well. If you're looking for something to watch on a friday night, you can't really go wrong with this movie.