Great Teacher Onizuka (GTO) Anime/Live Action

This is 1 of the 3 coolest anime for me. Its anime was shown in Animax and live action in GMA 7. Its not about space or super powers, its about a former gangster turned teacher. Its mainly relatable on after graduating college in how to remain cool and use positive things you learned from negative influences in college. Anime/Live action/manga are all cool and very funny.