Riveting `Why Towers Fell' carries viewers into tragedy: These are among the searing sights and sounds of a riveting Nova show, "Why the Towers Fell," that will air at 10 p.m. Tuesday and repeat at 8 p.m. Thursday on WTTW-Ch. 11. Even if you've read newspaper or magazine stories about the collapse, this show is worth watching because it provides a "you are there" feeling that no print account can match.

Um ... you know, it's probably a minority opinion, but I don't want a "you are there" feeling. Especially given that the show is principally talking about architecture and structure, I certainly don't see the value in a "you are there" feeling. Nobody who was there wanted to be there.

There was a show on the History Channel a couple of months ago which went into great detail about how the collapse happened (on an engineering level). It will be interesting to see if Nova's producers come up with the same answer.