For instance, the default android Home screen is pretty nice and clean. But if you want an even better looking (more 3D and few fancy effects etc) home screen you can try the totally free "My Launcher"!.
|@Girls - Yep you can change the background.. who is it these days, Justin Bie... :)|
*. Easy to customize theme.
*. Clean and elegant looking dock-bar.
*. A more 3D-ied :P home screen (with effects such as cube, page turn etc).
*. Change menus.
*. 3D main menu.
*. Better icon tips (well copied from iOS it seems)... and more.
If interested you can install it freely from this market page. Enjoy!.