The University of Georgia's student station has a pretty strict music philosophy that excludes popular artists. I would disagree that it results in no good music being played.
"Artists who meet any of the following criteria are automatically disqualified from airplay on WUOG 90.5FM:
The artist is or has been in regular rotation on major commercial radio stations. This does not apply to material used in specialty shows on major commercial stations.
The artist has a music video that has aired on major music video stations. This does not apply to material used in specialty shows on major commercial networks.
Another criterion that DJs must use when selecting music for airplay is its position on the Billboard Album Charts. If one of the artist’s albums has entered the top 50, then a DJ cannot play that artist."
http://wuog.org/music/philosophy/