Where can one see the 'unaired pilot'?

I've been looking for the same thing. I see no one answered here. Did you happen to get any responses any other way? I'd love to watch it and see how it compares.

I watched the clips of the unaired pilot. I think it looked like a completely different show, I'm glad they made the changes.

I have the complete series package, region 1. At the 1st season, 4th disc, Special Features, there is 'point of origin: inside the unaired pilot'.
It's not the full episode, just scenes with the commentaries from Nick, Cheryl, etc, about it. Mostly comparing both pilots. We can see the actors, and some crucial interaction. No family chemistry at all.
I don't know if the full unaired pilot is available. :)

The unaired pilot is not available anywhere. And for good reason. It came out terribly.

Fortunately, CBS gave us the chance to shoot the pilot again. We were able to make the important cast changes (though I still miss Michael Rooker very much) and we tweaked the story considerably ... though it is essentially the same story.

The only thing worthwhile about the unaired pilot is Tony Scott's (RIP) amazing editing job he did to save the show in terms of its premise and marketability.

You can see a clear example of his work if you watch the opening credit sequence from seasons one and two. That was done by Tony and his post crew.

While you can see clips of the Tony Scott edited version of the unaired pilot, no one will ever see a frame of the original pilot before Tony got a hold of it.