Getting Tricky with Wikis is a resource that gives you tips and tricks to customise your wiki. From changing your wiki name, adding a background image to a page to embedding any webpage to your wiki, this site gives you the instructions and html codes to easily make the changes you want.
Getting Tricky with Wikis is from the people who brought you Web 2.0 Cool Tools for Schools.
Thanks to Rhonda Powling for the link to Getting Tricky with Wikis.