Includes a working Mac OS X-style dock, however it doesn't exactly work like it does in OS X. It also includes "Mission Control" style windowing management, and even a Pear Appstore that closely resembles the Mac App Store where one can browse for additional Linux apps.
Linux Pear was recently updated to version 5 codenamed "Sunsprite" and is now available as a free installation Live CD. I'd suggest trying this out in some virtual environment before fully implementing it if you decide to install it to your PC. Keep in mind that Chimera does allow you to multiboot different operating systems besides OS X, so you can show your friends that you can run different operating systems on your CustoMac. Check out Going Bald's.