Happy 55th Birthday, Michael J. Fox!
To celebrate the actor's special day, click through the gallery to see the cast of Back to the Future then and now!
Prior to playing the eccentric "Doc" Brown in the Back to the Future trilogy, Christopher, 77, was best known for his Emmy-winning role as Jim Ignatowski on the hit show Taxi. His other notable works include playing Uncle Fester in The Addams Family movies and Judge Doom in Who Framed Roger Rabbit. He recently appeared in films Zodiac: Signs of the Apocalypse, Sin City: A Dame to Kill For and Pirate's Code: The Adventures of Mickey Matson.
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