The commentary is just o.k. George Clooney is very self effacing here and reveals just what ideas he stole and from where. I notice a lot of directors do that. Especially the better ones. Clooney's father was game show director so he was a good fit. The cut from actual old t.v footage to live action were great.
Cinematographer Newton Sigel doesn't have too much to add.
I really wished that Chuck Barris or Sam Rockwell would have been on this. It would make more sense in this case based on the material.
Overall the commentary is just o.k.

Did I mention the commentary was just o.k? ( what I wouldn't give for an editing feature on here ).

Definitely better than OK. I am giving it a solid 9 out of 10. Funny in some moments. Interesting in others. A dozen times you can really hear the amazement in their voices at something that happened accidentally (like with a thrown sign, or a broken wine glass), as well as the fact some wild all-in-the-camera special effect shots worked as well as it did.

It does not explain much to the story of the film, how true it might or might not be, but it does break down how precisely the film was designed, directed, shot, and edited.

I really would have liked to hear Charlie Kaufmanns take on it all, but as far as I know he still has not talked about this film to anybody.

The movie is so well designed, this is one of those commentaries where you just have to sit and watch the film while they talk. You do not want to just listen to it in the background.