Lead Scooby and Shaggy through five huge episodes filled with scary monsters and spooky ghosts.
If no good you could always get Scooby to do a pooh in the corner - they're attracted to the stuff!
Make your own Scooby album of vile vampires and mysterious monsters with 60 re-usable stickers.
Your natural expectation would be that they would talk, at least as well as Scooby does.
For fans of the cartoon, a number of Scooby Doo free online games are available.