Regarding the ability to create a double-clickable Terminal script (see previous item), Scott Lahteine notes that: AppleScript Menu can do more than just run AppleScripts. It allows you to run Perl ...
I've used Perl/Tk in the past and while it works, the look and feel is really that of a late 90s app. There isn't much customization you can do (in terms of skinning the default Tk widgets), so ...