One of the best documentaries I've ever seen. If you're a space buff, and haven't seen this, get it. Told by the people who actually lived the experience, "Apollo 13: To The Edge And Back" is very well written and presented. Originally produced during the 25th anniversary of the Apollo 11 landing, this documentary was an influence on Ron Howard during the production of his movie "Apollo 13". "To The Edge And Back" also covers a little of the history of the U.S. space program and the causes and motivations for going to the moon. The technical aspects are clearly explained in terms the layman can easily understand. If you could only have one Apollo 13 documentary, let it be this one.