Michael J. Fox reflects upon on-set tensions with co-star during 'Back to the Future' filming

J Fox reveals Crispin Glover’s unconventional methods on Back to the Future set created tension during filming scenes

Michael J. Fox has opened up about behind-the-scenes tensions with his Back to the Future co-star Crispin Glover, describing the actor’s unpredictable approach as a source of friction on set. In his new memoir, Future Boy: Back to the Future and My Journey Through the Space-Time Continuum, Fox recalled the challenges of working with Glover during the production of the 1985 sci-fi classic.

Fox, who portrayed Marty McFly, said that although he knew Glover before filming began, he was unprepared for the actor’s unconventional and spontaneous style. “I wouldn’t, however, say I was prepared to act with him – there’s no way to prepare for Crispin,” Fox wrote. Glover played George McFly, Marty’s father, in the film.

According to Fox, Glover had strong personal ideas about how his character should behave, often deviating from the film’s direction and technical requirements. “As George McFly, Crispin had his own ideas as to how and where his character should move,” Fox wrote. In one instance, Glover repeatedly missed his mark during a scene, prompting the crew to construct a physical barrier using sandbags and C-stands to keep him in frame.

“Nobody puts Crispin in a box,” Fox joked, “but that didn’t prevent the camera crew from literally building a box around him.”

Despite the challenges, Fox expressed admiration for Glover’s dedication to his role. “His talent was unquestionable, although his methods sometimes created friction,” he added. “Still, I respected how he remained true to George.”

Glover did not return for the film’s sequels in 1989 and 1990 and was replaced by Jeffrey Weissman. The Independent reported reaching out to Glover for comment.

Fox’s memoir also touches on other personal and professional experiences, including his battle with Parkinson’s disease, which he has lived with since 1991. The beloved Back to the Future franchise remains a cultural landmark, with the original film celebrating its 40th anniversary and earning over $389 million worldwide.