Great Teacher Onizuka
Popular anime and manga series centered around the exploits of one Eikichi Onizuka, a musclebound blonde ex-biker gang member who decides he wants to become a high school teacher to win the 'hearts' of virgin schoolgirls. However, we quickly find out that he's really a tough guy with a heart of gold who wins over each and every student that tries to get him fired by using his street smarts to inspire them and rid them of their inner demons.