I discovered "Raziko" today on the Android Market. It streams Japanese radio stations with emphasis on word programs.
It seems very useful to me as it is sometimes very difficult for a beginner to figure out where to start a radio stream on a Japanese website. On a website, sometimes access may not work at all with a foreign IP. Maybe that's why you can set your detailed location in the settings of Raziko.
(Maybe I didn't try hard enough on the web but I managed rarely to get a stream with decent word programs running. And it would have been useful because that's how I learned other languages. That is exactly what this app does perfectly. It's a perfect way to develop a keen sense of understanding spoken words beyond the antiseptic smart.fm treasury of sentences

Of course you can listen to Dramas or anything else - what I like about live radio is that you get instant access to the feeling of a nation.)
As far as I can say it lists regardless of the location the same 7 stations:
- TBSラジオ (TBS Radio)
- 文化放送 (Culture Broadcast)
- ニッポン放送 (Nippon Broadcast)
- ラジオNIKKEI (Radio NIKKEI)
- InterFM
- TOKYO FM
- JWAVE
A big plus is an up-to-date radio program of what you are listening to (on Japanese though, but that seems fair

And what even made me appreciate the musical content of a broadcast is a playlist of every song played. When you tap a song entry that starts a Youtube search. That's simple, but: Great!
Edit:
-It works on 3G easily, but you should have a decent data plan. I didn't test it on GPRS (2.5G) though, due to the good signal coverage

- There is a paid version. The free version has small google ads. I have no hints so far that the free version quits working, but don't take my word for it. It costs ~0,87€. Probably there is a recording feature unlocked in the paid version. I haven't taken the time to decipher the Japanese description of Raziko, perhaps someone can shed light on what the limitations may be.
From me: ***** for Raziko.
P.S.: It seems this is the official "Android Apps" thread... Would it be possible to collect every suggested App in an overview in the first post for example? Otherwise you'd have to read all the four(+) pages which is not efficient, despite the classy content
Edited: 2011-04-08, 8:57 am