Question: The Wrecking Crew, released in December, 1968, and starring Dean Martin, an American singer, actor, comedian, and film producer, Martin was nicknamed what, for his seemingly effortless charisma and self-assurance?
Related documents: [0]  [DOC] Dean Martin (born Dino Paul Crocetti; June 7, 1917 – December 25, 1995) was an American singer, actor, comedian, and film producer. One of the most popular and enduring American entertainers of the mid-20th century, Martin was nicknamed the "King of Cool" for his seemingly effortless charisma and self-assurance. [END] 
[1]  [DOC] The Wrecking Crew, released in December, 1968, and starring Dean Martin, Elke Sommer, Nancy Kwan, Tina Louise, and Sharon Tate, is the fourth and final film in a series of American comedy-spy-fi theatrical releases featuring Martin as secret agent Matt Helm. [END] 
Answer: 
King of Cool
King of Cool