| Had a phobia about riding elevators. |
| Has three stars on the Hollywood Walk of Fame for movies, music and TV. |
| Claimed he modeled his singing style after Bing Crosby. |
| Producer Sam Goldwyn once considered casting Dean Martin and Jerry Lewis as Sky Masterson and Nathan Detroit in the film version of Guys and Dolls. |
| Boxed professionally in his youth under the name Kid Crochet. He joked of his ring record: "I won all but 11 of 12 fights." |
| Was billed as Dino Martini when he sang with the Ernie McCay Band in the late '30s. |