Have you ever seen Apple's Dock? The thing at the bottom of the screen with the zooming icons?

KSmoothDock is a really kooool kicker replacement in the Apple style. Other than previous "Dock" applications, this one has a grapical configuration and no need to edit text files.

Check out the screenshots:
http://www.kde-apps.org/content/show.php?content=6585

And you can run it with just one klik: klik://ksmoothdock