Myst-san,
I always think any materials for kids are actually really good.
If you don't have hesitation to use such materials, they really are effective and useful.
When I was in high school, I actually used Sesame Street to study English by myself.
Easy words, people enunciate, no slang or corrupt language, good manner and some famous or
"everyone knows" kind of music. That was a perfect material for me.
After that, I also used some movies. We can usually find transcription with translation in bookshops,
so I watched the same movie several times using transcription book.
But I'm not too sure if you can find the same kind of books for Japanese films...
I don't recall any good TV shows, but luckily, we have thousands of "mukashi banashi" (old stories) in Japan
and despite the dialect and "typical old people talking in written world", there could be many things you
can learn from. If not this kind, any children's book could be also good.
We have many books, mangas, songs and so on introduced to other countries and there're always people
who upload TV drama with subtitles (although many of them are Chinese or Korean). You might want to
dig them a bit
Natsuko (奈津子),
Team JapanesePod101.com