Australia has a great nation wide youth radio station called Tripple J, it's government funded so no adRAB and generally focuses on upcoming Australian talent which is sometimes shaky, but also the larger underground (or at least beneath mainstream pop music) acts from overseas like Bon Iver, Tv on the Radio, The Mars Volta, Animal Collective etc...
Also my town has a community radio station, which is a hive of bad music but I love listening anyway because of the weird things you will hear, and also the staggering incompetence of the presenters. The other day there was a series of Christian rock covers, the highlight being I Love Rock and Roll becoming I Love Apostle Paul.
But there is one hour on Mondays I discovered with an Irish guy I used to play soccer with who has a pretty mad taste in music.