Michael J. Fox, the acclaimed actor and costar of "Back to the Future" Christopher Lloyd, is turning 88 this year. The number 88 is the same as the speed needed by the DeLorean time machine to time-travel. In conversation with PEOPLE at the A Country Thing Happened on the Way to Cure Parkinson’s event in Nashville, Fox praised Lloyd's youth and called him "one of the most youthful guys I know." The event marked a significant milestone for the Michael J.