Wikimap is an applet, written in java, for quickly exploring the huge web of links at wikipedia that we all know so well...
It starts out with a dot labeled "ninjas" in the middle (soon you'll be able to pick your starting point), surrounded by dots that represent articles that the wikipedia article on "ninjas" links to. click an article on the outside and it moves to the inside, showing you all the links for that article.
keep clicking and you'll be surprised where you end up.
click the center article to open the actual article in your browser.
powered by the excellent wikipedia api