Reeve's son unveils new documentary

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(CNN) -- A week after paralyzed actor Christopher Reeve announced he was able to move some of his fingers and toes for the first time since his horseback riding accident in 1995, his son, 22-year-old Matthew Reeve, is promoting a documentary he directed about his father called "Christopher Reeve: Courageous Steps."

Matthew Reeve -- whose film debuts Wednesday on ABC -- spoke with CNN's Bill Hemmer about his father and his project.

HEMMER: Have you and your father become closer as a result of this film about him?

REEVE: We spent a lot more time together and we've developed a professional relationship that hadn't previously existed. And it was a lot of fun doing it.

HEMMER: Does he ever not want to work out? Does he ever get up and say, 'You know what, I'm tired today.'

REEVE: Not that I've seen. You know, he works out as his schedule permits. So obviously, you know, if he's busy or, you know, has other things to do, he doesn't get a chance always. But he'll make it up later on in the week if he can.

REEVE: He just wrote a book that is actually out today called "Nothing Is Impossible: Reflections On A New Life." And I took the photographs for it.

HEMMER: He has said that by the time he's 50 he will walk again. That is one week away. Do you guys ever talk about the goal he set for himself and knowing in all reality right now that he's a long way from doing that?

REEVE: Well, what he really said was that he hoped to stand by his 50th birthday, not walk. And yes, we're aware that that's not going to happen next Wednesday. But he's definitely farther than he should be and I think it is a matter of time.

HEMMER: What does it mean to you seeing your father go through this with the attitude that he has had?

REEVE: It's just really impressive. You know, he just, his determination, there's no really other word for it, it's just impressive. He, no matter what, just ... exercises and he's doing his best in whatever he can to get out of that wheelchair.

HEMMER: I understand one time he expressed his, I don't know if it was a feeling of guilt -- you can characterize it better than I could -- about the accident itself and what he's put the family through since then. What did he say about that?

REEVE: Well, as you'll see in the documentary, he says he felt guilty that, you know, there are three children, there are three of us, my sister and her father Will and his wife Dana. And he felt guilty having sort of, I guess, incapacitated himself. But he shouldn't and there's no need for him to feel guilty. It was a freak accident. It's not his fault.

HEMMER: What did you think of the news last week? How did it hit you?

REEVE: Well, to be honest, I've known about it for about two years now.

HEMMER: Oh, you have? OK. So it's just coming out now?

REEVE: Yes. That's, no, him moving the finger was why I started to do this film. I thought it would be great to see his journey from moving one finger to up and walking and so I'm going to continue to film starting next Wednesday, his 50th birthday, up until he's up and walking.