What would be the best CMS for a PC gaming & hardware site? Here is what I have so far. http://kodiak.insanevisions.com/pcflame/admin/
Take a look through here - http://www.opensourcecms.com lots of CMS's on here and I think most now have demos.
actually jesse has done a pretty good job with media wiki. His site has a pr of 5!! world-of-nintendo.com you'll have to chop some of the parts of the template to get it looking like his site though...