Plot Details/Objective -» If there is one character that needed a flashbacks, this person was Michael, he was the first one to left the Island and his destiny was unknown until this episode. They writers function is was tie what happened to him after he left the Island, with the Island plot, I mean, he need to have a good reason to go back to the Island and help is formers friend´s and that reason was easy to create – Guilt and His Son.
What I Like/Disliked -» Michael Flashbacks Scenes. The ending. Sayid attitude was unexpected.
Presentation -» (8/10). Locke tribe interaction was a good way to start and make answer to Sayid was more vague than possible. Details -» (9/10). Michael FB was filled with information on what happened to him, Tom, why he wasn´t successful in committing suicide etc.
Cliffhanger/Ending -» (10/10). Not only the ending is mysterious, but it has a shock value.
Flashbacks -» (9/10). Michael FB was very informative and funny when he tried to kill himself. The only way to you don´t like Michael FB is to hate the character for what he did before.
Time and Scenes Management -» (10/10). All the necessary scenes was there, very hard to notice that scenes that bought time.
Dialogues -» (10/10) -» It feels like the all necessary dialogues were there.
Action /Adventure -» Wasn´t necessary, you have a little fight, but only for details.
Drama/Emotions -» (7/10). Not that type of episode, that you can really care for the character drama, but was not bad Michael suicidal tendency.
Suspense/Tension -» (6/10). Since you don´t care for Michael and you know that he is alive, you simple don´t feel tension when he tries to suicide.
Mystery/Curiosity/Doubts/Hints -»(10/10). You have enough revelation, hints, and Lost mythology.
Surprise/Twists -» (10/10). Tom and Libby appearance and the two surprising endings was a great surprise.
This episode is a great, and a great way to make you wait for what will happen until Lost episodes returns. This is why I rated it 9. This flashback is very informative and a huge shock in the end, which is a perfect combination for an episode of Lost.