Wikipedia is a free, web-based, collaborative, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Its 16 million articles (over 3.4 million in English) have been written collaboratively by volunteers around the world, and almost all of its articles can be edited by anyone with access to the site. Registration not required.
FilmSuggest is a new website that uses ratings by users, IMDb, and Amazon to suggest movies you of your own preference. It uses thousands of other users to give you efficient suggestions in a very easy way.