Michael J. Fox and Christopher Lloyd reprise their iconic characters from "Back To The Future" for a very special appearance on our show. SUBSCRIBE to get the latest #KIMMEL: http://bit.ly/JKLSubscribe Watch the latest Halloween Candy Prank: http://bit.ly/KimmelHalloweenCandy Watch Mean Tweets: http://bit.ly/JKLMeanTweets8 Connect with Jimmy Kimmel Live Online: Visit the Jimmy Kimmel Live W