David Shayer was a senior engineer on Norton Utilities for Macintosh 3.0, 4.0, and 5.0. Before that he worked on Public Utilities, a disk repair program that won the MacUser Magazine Editor's Choice Award, and on Sedit, a low-level disk editor. (November 2003)
Show Hidden Files in Open/Save Dialogs in Snow Leopard
In Snow Leopard, if you want to show otherwise hidden files in Open and Save dialog file lists, just press Command-Shift-period. Pressing it again hides the files.