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?
Sentence (from "Dean Martin"): Dean Martin (born Dino Paul Crocetti; June 7, 1917 – December 25, 1995) was an American singer, actor, comedian, and film producer.
Relevant evidence: No