Crunchyroll lets you legally watch a lot of subtitled anime one hour after it's broadcast in Japan. Non-members can watch most of the same content on the website (but it appears not on the Apple TV) a week later and with adverts. There is also a large back catalogue of series that are available.
The series which are available varies depending on what country you are in with the US having the most content. They also have various dramas but they are only really available in America.