This is sad. Dwayne McDuffie had been for the DCAU in the Oughts what Bruce Timm had been for it in the Nineties - a centrally important writer, animator, and director. His Crisis on Two Earths was a pretty damn good OAV, he did a lot of good work on the Justice League TV series, and there's been a lot of positive buzz about his new All-Star Superman OAV which is being released this week. It's been a bad year for animation, between this and the death of Satoshi Kon.