There are obituaries in The New York Times and by Jacqueline Trescott and Lisa de Moraes in The Washington Post:
"He was an enormous talent," [David] Simon, who co-created "Treme," said in an obituary he wrote for distribution by HBO. "He loved words and he loved an argument -- but not in any angry or mean-spirited way. He loved to argue ideas. He delighted in it, and he was confident that something smarter and deeper always came from a good argument."