guyver01, thanks for the link to the original screenplay, quite interesting. I think Kubrick did the right thing by altering it, but the original script certainly explained things much better.
Zenmervolt
EDIT: The 2001...Explained link was interesting, but I think that it perpetuates a couple of what I feel are myths about the film and the book. I've never liked the idea that H.A.L. malfunctioned, I am a member of the camp which insists that the problems were caused by H.A.L. having been given conflicting orders in his programming (ie. do not lie, do not tell the truth about the mission purpose, keep the crew safe, do not joepardise the mission). Also, I believe that in the H.A.L. deliberately caused that final video to be played once his higher functions were disabled. The review makes the playing of the video seem like more of a coincidence than I am willing to believe. Of course, that's just me.