Back to the Future turns 40! Meet the stars' famous families now

Michael J. Fox, now 64, found love the same year of the movie's release, when he met actress Tracy Pollan on the set of Family Ties as she was cast to play his onscreen girlfriend.

The pair tied the knot in 1988, and Tracy was instrumental in supporting and championing her husband when he went public with his Parkinson's disease diagnosis, co-founding the Michael J. Fox Foundation in 2000 to fund research for the disease. The couple are still together and very much in love, based on their social media activity. 

Michael and Tracy are the proud parents of four kids: son Sam Michael Fox, 36, twin daughters Aquinnah and Schuyler Fox, 30, and youngest daughter Esmé Fox, 23. While Sam is also a producer and actor, not much is known about the personal lives of their daughters, though Esmé recently graduated from Duke University.

Lea Thompson, also 64, was engaged to actor Dennis Quaid when Back to the Future was released, but they ended things in 1987. That same year, she met director Howard Deutch on the set of Some Kind of Wonderful, and they tied the knot in 1989.

The pair have two daughters, actresses Madelyn and Zoey Deutch. Madelyn, 34, is best known for appearing in shows like Outcast and the movies 50 to 1 (2014) and The Year of Spectacular Men (2018), which she also wrote and composed. She is now married to Zach Carlisle and welcomed a daughter named Robbie earlier this year.

Zoey, 30, achieved initial success with her appearances in The Suite Life on Deck, and has since starred in movies like Before I Fall, Flower (both 2017), Set It Up (2018), Zombieland: Double Tap (2019), and Juror No. 2 (2024), also making her Broadway debut in a revival of Our Town in 2024.

Christopher Lloyd, now 86, has never had any children of his own. However, he has been married five times, and was still with his second wife, actress Kay Tornborg, while making Back to the Future.

After their 1987 divorce, he married Carol Ann Vanek in 1988, though their union was short-lived, ending in 1991. He then married screenwriter Jane Walker Wood in 1992, with their marriage lasting until 2005. In 2016, he married real estate agent Lisa Loiacono, who was his realtor when he sold his home in 2012. They remain together to this day, and he has one stepson through Lisa.

Christopher also has a famous nephew in Sam Lloyd, a fellow actor who was best known for playing lawyer Ted Buckland on the sitcom Scrubs and later on the sitcom Cougar Town, also making guest appearances in several popular shows with his uncle. Sadly, Sam was diagnosed with metastatic lung cancer in 2019, and passed away in 2020 at the age of 56.

Thomas F. Wilson, now 66, aka Biff Tannen himself, married his wife Caroline Thomas in 1985 as well. Together, they share four children: a son named Tommy, and three daughters named Emily, Anna and Gracie, although he keeps them out of the spotlight.

The actor and stand-up comedian shared some insight into living with mostly girls in his house during one of his sets, joking his house "looks like Clay Aiken exploded in it, I live in Malibu Barbie's dreamhouse."

Crispin Glover, now 61, is the only one of the Back to the Future main cast to be single and without any children, although he briefly dated Playboy model Alexa Lauren from 2001-03.

During a conversation with The Guardian, the actor stated that he'd never "been close to getting married," and clarified that his schedule was too busy to make time for family. "I've never been close to having children. I'm on the road so much, but if I had children it would be something that I'd want to be present for and I feel like I would not be present."