I read all of the Percy Jackson & The Olympians series and I loved them.
My favorite god is Poseiden
My favorite goddess is Artemis, because lets face it she is the coolest.
I didn't like the movie as far as a book adaptation but I loved it as a stand apart.
My favorite book is The Battle of the Labyrinth.
The series starts out very much as a younger kids book series, but as it goes on you get so much more depth and build to the characters. How many other kids books talk about people dieing so easily and really getting into the story enough to make the kids feel for the characters if they die.
The Selena comments i read said something about it making no sense.
Luke convinced Selena to spy for him, after she wanted to quit being a spy Luke blackmailed her by saying he would tell everyone she was the spy and she would lose everything.. think how many times they wanted to kill the spy. So her losing her life to try and save her friends makes a lot of sense, she felt like she had put them all in danger and that this was all she could do for them.
R.I.P - Jacob Black [Died August 2nd, 2008](Page 360, Book 2, Breaking Dawn)