I"ve created several wikis which focus on the integration of art education with other content areas. Viewing the You Tube is a great way to grasp the basic idea of what makes a wiki different from blogs or traditional web sites. The challenge is that most school systems block the wiki sites (and many other 21st Century Learning Tools). So that is a whole new post...using technology responsibly.
Meanwhile, get wiki with it...add your two cents...
ART at the HeART of Social Studies
The Art & Science Connection
The Intersection of Art & Math