For his birthday, Michael J. Fox shows on Instagram how much he loves his son. The "Back to the Future" star gushes about Sam ...

Michael J. Fox is a proud father of four. It comes as no surprise that on May 30, he posted a happy birthday message to his eldest child and only son via Instagram.

Michael J. Fox shared a heartfelt message to his son Sam on his 36th birthday that had fans saying the same thing ...

“Happy Birthday Sam…No better friend, brother, or son on the planet. Love you so much,” the Back to the Future star, 63, ...