So this is out on DVD in Wal Mart right now. Batman didn't appear, was referenced but not name dropped. But Scarecrow was used pretty brilliantly and oddly unexpectedly for a Scooby Doo movie. The scenes with Crane and Velma were especially great. Batman should share more of his rogues with Scooby if this is the result. But I'm not going to spoil anything here.

On top of all that it was probably the best Scooby Doo movie in years since Frankencreepy, and a breath of fresh air after the last two movies. Highly recommend it for all Scooby fans and fans of the Scarecrow.