You can download a lot off of DeviantArt. Also skins for other stuff such as Reinmeter, Rocket dock, general skins for windows, and wallpapers.
I get my wallpapers from Wallbase.net, on there you search your resolution in the search bar and a load of wallpapers.
Rocketdock is a program that stays at the top of your screen and you can launch certain things that you put on it such as programs and folders. So it's like having shortcuts but with it looking sleek and clean, although your browser and other programs to go over the top of it.
Reinmeter is a program where it can show total load on your ram, the weather, cpu temps, and much more. Also you can edit the skins so you could change the colour of them etc. You can find skins on deviant art again.
I hope this helps.
EDIT: Here are the links for these.
www.deviantart.comEdited by BMorrisSly - 12/22/10 at 2:29pm