When the Mystery Machine is forced into a sand pit by a giant bat, the gang gets help from the Three Stooges.
Batman and Robin join the gang in pursuit of the Joker and the Penguin.
The gang watches the haunted Addams house while family goes on vacation.
Jonathan Winters invites the gang to stay at Maude Frickert's haunted farm.
Don Knotts helps the gang investigate the disappearance of Captain Moody.
Phyllis Diller and the gang attend a seance at Magic Mansion.
Don Messick
Scooby-Doo
Frank Welker
Fred
Heather North
Daphne
Casey Kasem
Shaggy
Nicole Jaffe
Velma