Braingle.com allows you to create trivia tests for others to try.
Triviad.com has lots of trivia categories from Final Fantasy to The Simpsons.
Trivia.com. Guess the name says it all, eh? They describe themselves as an online fun & entertainment portal on the web.
TriviaPlaza.com has quizzes in different categories ranging from Pop Music to Computer to Celebrity Birthdays.
AllAboutTrivia.com is a flash games with over 30 thousand questions.
CrazyAboutTV.com - guess the name speaks for itself.
123facts.com has trivia organized by categories from animals to world plus a trivia quiz.
Useful Trivia has lots of categories and an interactive game for you to test your trivia knowledge.
All Trivia Game is an interactive trivia game based on the popular TV show "Who wants to be a millionaire". This game contains multiple sets of questions so you can play and try your luck more than once.
funtrivia.com The name says it all.
uselessknowledge.com They claim to have over 15,000 trivia facts. I won't argue with them.
triviaguy.com. So, you think you're good at trivia? This guy has a Guiness World Record in it. The site comes complete with trivia tournaments and other trivia stuff.