I kinda liked Apple's new Leopard theme, so I decided giving it a try, and I made this IconPackage.
Most of what you need to know is included in the screenshot. Applying this theme will change all System Icons, apart from these in Control Panel, because I am currently using that Tiger System Preferences program instead.
Additionally, it changes all File Type Icons, and replaces all available cursors with those Leopard uses.
Of course, you are going to need the program IconPackager which can be found here
So, download, apply, comment, and if you liked it, it!