The NPR crew may be slightly more subtle in their ideological agenda than the bombastic Limberger, but make no mistake, they are as committed to spreading their liberal point of view as Limberger is to expressing his conservative one.
The NPR crew is pretty conservative by leftist standards. They all went along with the Iraq war quite politely. They all folded when the supremes chose Bush.
Their agenda, if they have one, is much different in principle than Rush's, or Randi Rhodes. They aren't rabid, for one thing.