Another rare example of the kind of thing the Internet really should be used for more often. sweatshopwatch.org is an amalgamation of civil rights groups in America formed to monitor the rights of workers around the country. It takes itself rather seriously but is very well put together.
If you're looking for something different from the movie trivia sites, then try the "Movie Quote Contest". All you have to do is guess the film from which the quote of the day comes. If you guess right, then you get to enter the next quote. It's more of an on-line party game than anything else, but still fun.Reuse content