Marking the 40th anniversary of Back to the Future (1985), Michael J. Fox recently went back to the ’80s to reminisce about making the time-travel classic.

In his new memoir Future Boy , now available, the 4x Golden Globe winner recalled how his co-star Crispin Glover “created friction” behind the scenes with his scrambled approach to portraying Marty’s (Fox) hapless dad George McFly.

“Nobody puts Crispin in a box. But that didn’t prevent the camera crew from literally building a box around him,” wrote Fox, according to the New York Post . “As George McFly, Crispin had his own ideas as to how and where his character should move.”

Fox recalled filming a scene of dialogue with Glover in which he wouldn’t stay on his mark.

“As Crispin approached the camera, he was meant to s

See Full Page