AppleScript Scripts
Since buying a Mac around 2 years back I've barely touched the automation functionality as Automator itself is barely powerful enough to provide for my needs. Don't get me wrong, I use it fairly frequently, but anything that involves non-trivial logic is simply impossible, no doubt I'd expected too much.
The learning curve is pretty okay with AppleScript, unfortunately the documentation is not only difficult to find but also frequently out of date. The Script Editor shipped with Tiger has many extremely nice features, but without a set of basic Script Editor Commandments it is difficult to use in practice.
I've written a number of articles on the scripts I've worked on in the last year, and this page collects those articles, and a number of other scripts that I've not yet had the time to fully document in blog entry form.
As ever, I suppose I should add a disclaimer, but then I found the following with a Google, and so state quite simply, that my sentiment mirrors his. Disclaimer on Jon's Little page of AppleScripts.
Articles
How to make daily recurring To Do items in iCal
Planning recurring To Do's via iCal itself ("version 2.0" of the above article)
Scripts
Deletes the bookmark that refers to the currently loaded page in Safari
The latest release (2.1) of my create daily to-dos script. This version takes into account the UNTIL field on recurring events, thusly allowing for changes in weekly schedule to be taken into account when creating new daily to-dos.

The AppleScript Utility adds a really nice level of convenience when using application specific scripts.
Hope this information is useful to some.