The Leaky Cauldron
I can't believe I haven't posted this site yet....My bad!
http://www.the-leaky-cauldron.org/
The Leaky Cauldron is a massive conglomoration of all things Harry Potter related. You will not find any spoilers of the final book here....The Leaky Cauldron wants to protect the final book until it is officially released. (The site has done this for previous publications.)
Here you'll find a Potter cast, interviews with people involved with the books and movies, trivia and so much more!
Oh, and guess what! They have a count down to Harry Potter and the Deathly Hallows. 2 days, 9 hours, 56 minutes and 58 seconds......Not that I'm excited or will be waiting in line at Barnes and Noble at midnight on a Friday (and no, it's not pathetic, it's called being a dedicated fan, plus you get to participate in a historical event!)