William Shatner, the 91-year-old Star Trek icon, recently discussed his mortality ahead of his documentary release, You Can Call Me Bill. Acknowledging his limited time, Shatner created the film as a way to leave something behind for his grandchildren. He’s a proud grandfather to five from his three previous marriages.

Directed by Alexandre O. Philippe, the documentary will premiere at the SXSW Film Festival in Texas and features Shatner’s daughters—Leslie, Lisabeth, and Melanie. In a 2014 interview, Shatner spoke about the joy of being a grandfather, cherishing moments with them and sharing life lessons from his career.

Shatner made headlines again after reuniting with his ex-wife, Elizabeth Martin, three years after their $2 million divorce. They reconnected at the Living Legends of Aviation Awards, expressing their renewed passion. Shatner kept his Studio City home and ranch, while Elizabeth received properties in Malibu and Kentucky.

Shatner has been married four times, first to Gloria Rand, then Marcy Lafferty, Nerine Kidd (who passed away in 1999), and Elizabeth. Despite his age, he remains active in his career and family life, using You Can Call Me Bill as a way to leave a legacy. His candid reflections on mortality serve as a reminder to cherish time with loved ones.