Well known as being the innocent boy who turns into the pinnacle of all evil. He breaks vital rules that a jedi must obey, and in doing this, seals his fate of turning to the 'Dark side'.
It is his love for his wife Padme that causes him this change.
A Jedi Shall not know anger, nor hatred, nor love.
Anakin knows all these things that he should not.
He is actually the victim of the Star Wars saga, we learn this from the prequels. It is rather sad.
He is 'the chosen one', the one who will bring the force back into balance.
Padme Amidala: It must be difficult being a jedi, not being able to go to the places you like. Or do the things you like...
Anakin Skywalker: Or be with the people I love?
Padme Amidala: Are you allowed to love? I thought that was forbidden for a jedi?
Anakin Skywalker: Attatchment is forbidden. Possesion is forbidden. Compassion, which I would define as unconditional love, essential to a jedi's life. So you might say, that, we are encouraged to love.