If there was one movie that changed Michael J. Fox 's life as an actor, it was "Back to the Future."

During the Oct. 19 episode of Sunday Sitdown, Fox recalled how he got the role of Marty McFly in the 1985 flick. He said he was in the middle of shooting his Emmy-winning series "Family Ties" when the show's creator, Gary David Goldberg, called him into his office.

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At the time, Fox was 23 years old.

"I had just done 'Teen Wolf,' and I thought maybe he saw 'Teen Wolf' and was firing me," Fox said with a laugh.

"But I went into the office, and he had this envelope. He said, 'I didn’t know how to tell you this, but a few months ago, Bob Zemeckis gave it to me and said they had this movie they wanted you to do,'" Fox

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