Was mentioned in David Fincher's 1999 film, Fight Club (1999). When Tyler asks the Narrator who he'd fight, the Narrator ponders for a moment and replies, "Shatner. I'd fight William Shatner".
When recording the narration for his "Shatnerverse" Trek novels, he pronounces the name "Cardassian" (normally pronounced "car-DASS-ian") as with Kim Kardashian.
William Shatner expressed his sadness at not being asked to reprise his iconic role of "Captain James T. Kirk" for the new Star Trek (2009) film. In response, Shatner wrote "Star Trek: Academy Collision Course" (with Judith and Garfield Reeves) as his own version of how Kirk and Spock met. In his version of the story, a teen-aged Kirk gets into criminal trouble and is given a choice: Go to prison or join Starfleet. He, of course, joins Starfleet and meets Spock. But he does not meet any other major character from the "Star Trek" (1966) series. However, the story does tie into the first season episode "Star Trek: The Conscience of the King (#1.13)" (1966) and Kirk meets his Starfleet bully, Finnigan, from "Star Trek: Shore Leave (#1.15)" (1966).
Wrote the TekWar (1994) (TV) series of sci-fi books, completely unrelated to "Star Trek". These were turned into several made-for-TV movies and a short-lived series. Shatner himself costarred, and directed several episodes.