What other activity was the star of Back to Future Michael J. Fox engaged in besides acting aforementioned movie?

Michael J. Fox was also heavily engaged in advocacy for Parkinson's disease research after being diagnosed with the disease in 1991. He founded the Michael J. Fox Foundation for Parkinson's Research in 2000, which has become one of the leading organizations in the fight against the disease. He has been a tireless advocate for research and awareness, using his platform to educate the public and raise funds for research.

Besides acting and advocacy, he has also written several books, including his autobiography "Lucky Man" and a novel called "The Warmth of Other Suns." He has also made appearances in various television shows and films, including "Spin City" and "Rescue Me".