A website that is an experimental playground. These websites seem to be popping up more and more in the recent months as a way for Web Designers and the like to vent their frustrations of working with corporate clients that want boring websites.

On these sites, the designer has full control over what they place on the site, so they can push the limits of the technology that is avaialable.

A few of the more popular 'experimental' sites:
http://www.praystation.com
http://www.deconcept.com
http://www.assembler.org
http://www.onyro.com
http://www.nosepilot.com
http://www.bzort-12.com
http://www.flight404.com

enjoy!