I was unhappy when Safari lost the Page Snapback command from the History menu. This command would take Safari back to the very first History page for that window/tab. Well, here's a little javascript bookmarklet that does the same job.
javascript:history.go(1-history.length);
Create a new bookmark, and enter that into the Address field. I keep mine on the bookmark bar, and it works fine for my needs. I wish I had thought of this sooner!
Mac OS X Hints
http://hints.macworld.com/article.php?story=2009090817432725