I went down to the site where the World Trade Towers used to stand, then went to site holding where the Tribute of Lights was, taking pictures along the way. I have included some of my favorite ones. There is a link to the rest at the bottom.
Pictures embedded below.
(Above shot similar to the mobile one I tool [Berman Post: Tribute of Lights])
You can see the rest of the pictures at http://picasaweb.google.com/BermanPost.com/9112009911Tribute.
The pictures I took last year can be seen at Berman Post: 9/11/2008 Pictures (part two).