Twitter -- the closest thing to an instant barometer of public opinion -- exploded with reaction.
"To my friend Charlie Potatoes: Great TV! Better you than me," former talk show host Arsenio Hall tweeted.
Morgan, himself, tweeted: "Incredible interview. I'd cast him in a movie with Charlie Sheen tomorrow."
Morgan also asked Blake about his wife's background.
"I think she was a con artist, yes," Blake said. "I think she came to Hollywood to con her way into show business."
Blake also said he "didn't know here well enough to know her."
"I love her - well, I love you as a human being. You're my brother in arms," he told Morgan during the interview. "We're all in this thing together. But we were not dramatically in love or things like that."
Blake is best known for his role as a tough-talking detective in the 1970s TV show "Baretta" and his Oscar-nominated performance as condemned killer in the 1967 movie "In Cold Blood." He began his career as a child actor, starring as a Mickey in the "Our Gang" movie shorts.