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The CentOS Live CD is one of the important sub-projects of the CentOS project as it gives people the opportunity to test out CentOS' hardware support without the need to install it.
Admittedly, the reasons why CentOS is great for servers (API stability, 7 years of support, proven environment) sometimes interfere with its success on the desktop. And if you are not blessed by picking the hardware in function of CentOS, than the Live CD is a great tool to learn and appreciate CentOS on the desktop.
Again great work by Patrice Guay and the rest of the CentOS QA team !