Clark Gable was an American actor of extraordinary accomplishment.
Edith Keeler mentioned him to both James Kirk and Leonard McCoy during their visit to Earth, in the year 1930. Both men knew nothing of the actor, a fact Keeler considered extraordinary – and that inadvertently led to their reunion, and Keeler's death. (TOS: "The City on the Edge of Forever")
- At the time Keeler mentioned Gable to Kirk, he was considered a bit player. It was not until 1934 that he performed a role that garnered him any significant recognition. This, however, may indicate a point where Star Trek history varies from our reality.
In an alternate timeline, when the USS Voyager was severely damaged by the Krenim, B'Elanna Torres wrongly assumed she had seen Gable starring in the 1955 movie To Catch a Thief twice, when in fact it had been Cary Grant. (VOY: "Year of Hell")