Actor Michael J. Fox, 64, was born on June 9, 1961 in Edmonton, Alberta, Canada. He is best known for his role as Alex P. Keaton on the NBC sitcom Family Ties and as Mike Flaherty on the ABC sitcom Spin City, as well as for his role as Marty McFly in the Back to the Future film trilogy. He is married to actress Tracy Pollan, who co-starred with him on Family Ties, and they have four children.