Wallpapers: 
Grass Blades (as seen on Apple.com’s videos)
Kinkakuji
Leaves
Rock Garden
Roses
Zebra

Icons:
Leopard Icons (icns)

Here are some of Leopard’s icons (512×512). It’s just beautiful!!!

DOWNLOAD THESE LEOPARD ICONS HERE.

Read More About this package here.

PS: you can convert PNG (or other image files) files to ICNS thanks to an excellent tool called img2icns here is the direct download link. Simple like so many Mac apps: the only skill it requires is the “drag and drop”

Of course you all have seen the new transparent menu bar, the new dock etc…Here are more details on 10.5 improvements:  

Imagine the sample on the left as your current display, and the sample on the right as a display with four times the amount of physical pixels. Both use the same amount of space, but there is a very noticeable difference.

All application and document icons will grow from 128×128 pixels to 512×512 pixels!!!

All apps go “brushed”:
Aqua applications (non brushed metal) like System Pref, Apple Mail and Preview became brushed :p
iChat and Finder remains brushed…

Here is a superb package of icons for OS X.
All the hardwares are present: from Mac’s to Soundsticks, Bose Speasker, Digital Cameras etc…
I forgot where I get this pack from (if someone recognizes it please send me a mail and I’ll put credits to the author).
I’m not sure but I think I get this one from InterfaceLift.

Since I don’t know the original link, I have archived and uploaded this pack on the blog, so you can download it here.

Tutorial on how to change icons in OS X.

I wrote a post on Adobe’s CS3 icons because I didn’t like them at all.. It seems many persons share my point of view, and finally some seem to have heard our prayers and created an amazing pack of icons for CS 3 and for Acrobat.Here is what they look like:Download the .icns files here and .png files here .If you don’t know how to replace an application’s icons go to Jihed’s tutorial and change them in 4 easy steps.These icons have been created by Jeremie Cornelissen (http://www.jeremie.nl/).

You may know that there are some applications which make it very easy to use a complete set of icons automaticly:all you have to do is chose the set to use.
But there’s a way to change quickly the icon of an application or a folder.
1) Chose the folder/application you want and pulse Command-i:
You got this ordinary window:

2) Then open the folder where the set of icons is and do the same with the icon to use
(command-i).
3) Now,in the “information” window of the icon,click on the little picture(the red one in the example) and Copy it:

4 )Finally On the “information” window of you folder,select the original appearance(the Green folder in our case) and paste the one you copied in step 3).
That’s it.
InterfaceLift is a great site where you can get a lot of free icons sets and great wallpapers in multiple resolutions!