Obama once called a NY Times editor to talk about the paper's negative criticism of him: book

Executive Editor of MSNBC.com Richard Wolffe has a book out with a behind-the-scenes look at President Obama's 2012 re-election campaign. One item in the book, The Message: The Reselling of President Obama, recounts how Obama, frustrated with negative criticism from the New York Times, called up the paper's editorial page editor Andrew Rosenthal (though no one had his number):

“[Communications staffer Anita Decker], just call the main [Times] line,” said the president.

“Anita, you can’t do that,” [senior adviser Dan] Pfeiffer interjected. “If you call the main line, they are going to announce on the PA system that the president is on the phone for Andy Rosenthal. We can’t do that.”

So much for the position of strength. In time, they found the number and the president spoke at length to Rosenthal.

h/t Huffington Post