Dwayne McDuffie has passed away. Fans of comic books and the DC Animated Universe should know of him (if not, his wiki page has his filmography/bibliography
http://en.wikipedia.org/wiki/Dwayne_McDuffie)
http://www.comicbookresources.com/?page=article&id=30969EDIT: If you are a fan of DC Comics or the Animated DC Universe (like the Batman: The Animated Series) then you MUST watch Justice League (later renamed Justice League Unlimited). It's fantastic, very well written stories for anyone of any age.