His parents from the show are out campaigning for Kerry.
Back To The Future is one of my favorite movies. I have the trilogy on DVD, and hope he doesn't say or do anything that ruins BTTF for me.
However, to be fair, I don't think that Fox is a ghoul all of a sudden because he supports embryonic stem cell research. He probably was always pro-choice (he is in showbiz, after all, and is Canadian to boot) and this is a natural extension of his long-time stances, although he had no opportunity or reason to express them.
I was never a big Christopher Reeve fan even before his tragic accident. I thought he was OK as Superman, and that while the first Superman was as lame as almost all comic-book movies are, the sequel -- Superman II -- was outstanding. Then, of course, the series "jumped the shark." Superman III -- with Richard Pryor doing his best Stepin Fetchit -- is one of the worst movies I have ever tried to watch. I didn't even bother with Superman IV once I knew it was about "Peace on Earth" complete with Superman flying off with a missile for purposes of destruction. So much for "The American Way." (It was involvement in the Yankee-Russkie business that ruined the Rocky series too.)
What annoyed me about Reeve was the way that he gleefully discussed his relationships with hot female celebs whenever he would go on a talk show. It was like he was daring someone to ask if he was ever serious about the women, and that he was mentioning them all the time to let people know he wasn't gay.
I would have more respect for Fox and would have had more for Reeve if they had admitted that they didn't really think that much about the problems of people such debilitating illnesses until they contracted them. IMHO, that certainly is true of famous former NFL player Nick Buonoconti, the father of Mark Buonoconti, who was America's most famous spinal-cord freak accident victim before Reeve fell off his horse. Before the college football-field injury that left his son paralyzed, Nick was a spokesman for a tobacco company that produced "smokeless tobacco." He was one of those guys who dissembled unconvincingly that there is no link between tobacco use and cancer. Then, when HIS flesh and blood was affected, he became a medical crusader.