"He’s so wonderful. We were a natural pairing. It was a wonderful casting job by Bob Zemeckis. We clicked. We didn’t have to probe to find chemistry, it simply existed. It was a parfect match for Doc and Marty. Honestly, he’s just amazing; all he’s done… to be afflicted with Parkinson’s so young, and he’s never stopped. He works on his foundation, goes to congressional hearings, makes appearances to raise money and awareness, he’s on TV and talk shows. He’s so courageous. I have a tremendous admiration for him."
— Christopher Lloyd on Michael J. Fox