Well said, and my thoughts exactly on the four men.
The only thing I'd add -- and this is just a personal sore point with me -- is that O'Reilly's Orwellian use of the term "progressive" (when he's describing a left-winger) is getting on my last nerve. Basically I enjoy watching his show, but his increasing use of that word is bizarre.
And Rush is, simply put, God's gift.
A better name for them would be "Social Revisionists."