Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great, Innovative Series

My girlfriend introduced me to Dexter, and I'm not complaining! Sure, Dexter's obsession is being a serial killer, but we all have obsessions. Dexter does a great job of portraying a person and how they balance their life with their addictions. I have seen every episode of Dexter and it is great. The great writing and acting is evident. This show has a great cast and you immediately care about the characters. Michael Hall and Jennifer Carpenter are great and they really hold their own in season four. It is no wonder they are married in real life. This season is a little disturbing than the other seasons, which I LOVE. I am extremely anticipating what season five has to offer. Let's hope season five is not the last.