My personal favorite in online listening is "RadioioEclectic" and can be found at: http://www.radioio.com/radioioeclectic.php
Great mixture of eclectic and some mainstream music.
The Radioio "stations" offer nearly all musical tastes, including "Pop", which may better suit the request for "Jugend-Radio".
Another public radio station offering live streaming, great music and the full gammet of NPR, Prairie Home Companion, Car Talk etc is called "The Current" (Minnesota Public Radio): http://minnesota.publicradio.org/radio/servic...
If you have Windows Media Player, click on "Media Guide" and then "Internet Radio/Tuner" - there you can search for stations according to musical style and language/country.
for the link to "This American Life" - I will definitely check this out.
For any of you in need of a heaping dose of comedy, there is 24 hour live streaming comedy radio at : http://www.bcnonline.com/
They feature Lewis Black often - who you may know from The Daily Show. George Carlin is also a regular.