
I recently updated to Itunes 8, and was playing around with the genius playlists when I found out Itunes added a jpop section and anime section to their lists. It doesn't have as much as the Itunes Japan, but they have over 100 artists up already in the jpop section. The Anime section is kind of small but has enough to start.
Just thought it would be a cool thing to know, now I can support Jpop artists through Itunes.
The sections are a bit tricky to find. Go to the Itunes Store main page, click browse. It will bring up a wordy list, pick Music, and then go down the genres. There should be "anime" and "Jpop" now. I am not sure if it works with Itunes 7 and below, but Itunes 8 it does.