beltrom
Since this thread seems to have gone in prog rock direction check out the "progzilla radio" podcast if you haven't. Picked up a few good artists from that.
If you check Live 365, for example, you can find about 3 or 4 channels that are interesting, with one exception ... after a couple of hours, it repeats the same thing ... in other words ... top ten all over again, and that in itself is not progressive at all.
Even I have tried to get on with them, and I wanted to have a set of rotating things, but already I had 37 hours of music string together and they freaked out ... they only wanted an hour and a half or 2 hours ... and goodness, you can't even introduce a whole bunch of artists on that unless they are top ten turkeys and that's not very progressive.
However, there is ALWAYS, one or two songs, or albums that you end up checking out on these things ... but the repetitious nature of it all is sad and pathetic.