Scary Saturday Block Party was a 4-hour marathon that aired on Saturday, October 30, 2004 from 3:00pm to 6:00pm. The marathon featured some Halloween specials like Foster's Home for Imaginary Friends, The Grim Adventures of Billy & Mandy and Hamtaro.
It is a Halloween special of Saturday Block Party.
- 3:00pm - Foster's Home for Imaginary Friends - "Bloooo"
- 3:30pm - The Grim Adventures of Billy & Mandy - "Who Killed Who?"/"Tween Wolf"
- 4:00pm - The Grim Adventures of Billy & Mandy - "Billy & Mandy's Jacked-Up Halloween"
- 4:30pm - Hamtaro - "Ham-Ham Halloween"
- 5:00pm - Scary Godmother: Halloween Spooktacular