The actor who has been public about his nearly 30-year battle with Parkinson's disease speaks exclusively to ABC News about his new book, "No Time Like the Future." READ MORE: https://gma.abc/3nu4hL9 Subscribe to GMA's YouTube page: https://bit.ly/2Zq0dU5 Visit GMA's homepage: https://www.goodmorningamerica.com Follow GMA: TikTok: … [Read more...]