The new issue of The New Yorker has an extraordinary cover by Art Spiegelman. It appears to be solid black, but when you look at it closely, you realize that there are areas that we home theater geeks would call "blacker than black". The tip-off is that one of those areas extends upward through the magazine's title. It's in the shape of an antenna. The "blacker than black" traces the image of the World Trade Center's twin towers, discernible now only in outline through a dark shroud of mourning. M.