I enjoy reading Wikipedia from time to time too. It can get pretty addictive, reading one article, then following the links to other articles. As for any perceived bias in articles, Wikipedia has a feature where if someone disagrees with the view of an article, a note is posted at the top of the article in plain view stating that the article is in dispute, and you can follow the linked note to see details.
Yep, which is the case with the Terri Schiavo, and reading the posts about the dispute, they kept the article from straying into Micheal bashing as several contributors had done and got their accounts pulled.