"I was doing Family Ties and Back to the Future at the same time, so I was getting about an hour, two hours sleep every day. So, it was really grueling, and it was exhausting, and it was—it took its toll, you know, physically and even emotionally to an extent because I just didn't know where I was a lot of the time. It was my whole life. Every waking moment was about work, but I was 22, 23 years old; it was my dream to be in the film and television business. I didn't know I'd be in it simultaneously. It was just this weird ride that somehow I got on, and I was glad I did." - Michael J. Fox (interview from BTTF bonus feature interview "Making the Trilogy")