This is fabulous--Safari 1.1 (included with Panther) implements the CSS
text-shadow property. When I was learning about CSS, I remember reading about
text-shadow and getting quite excited, before I realised that no current browser actually supported it. Judging by the nice examples produced by Frank Limbacher, the results can look pretty stunning.
When I get some free time (hah!), I might include some shadowed text as a special treat for Panther users, and wait for the rest of the browsers to catch up.