Proof! NPR's nasty tilt to the left

From Media Matters, a few days ago:

"The tally sheet for the number of times think tank experts were interviewed to date on NPR in 2005," and [NPR ombudsman, Jeffrey Dworkin's] explanation:

American Enterprise -- 59    
Brookings Institute [sic] -- 102
Cato Institute -- 29    
Center for Strategic and Intl. Studies -- 39    
Heritage Foundation -- 20    
Hoover Institute -- 69    
Lexington Institute -- 9    
Manhattan Institute -- 53    

There are of course, other think tanks, but these seem to be the ones whose experts are heard most often on NPR. Brookings and CSIS are seen by many in Washington, D.C., as being center to center-left. The others in the above list tend to lean to the right. So NPR has interviewed more think tankers on the right than on the left.    

The score to date: Right 239, Left 141.