Blue's Clues/Caillou

Cast:
and more
 * Steve as Caillou
 * Slippery Soap as Leo
 * Mailbox as Mr. Washington
 * Mrs. Pepper as Doris
 * Shovel as Boris
 * Wall-E (from Wall-E) as Grandpa
 * Amanda Bynes as Grandma
 * Mr. Salt as Billy
 * Pail as Sarah
 * Jacques (from Finding Nemo) and Rolf (from Ed, Edd n Eddy) as Jason and Jeffery
 * Gloria Estefan as Rosie
 * Chuckie Finster (from Rugrats) as Gilbert
 * Toni Braxton as Clementine
 * Rosie O'Donnell as Mrs. Martin
 * Tai Lung (from Kung Fu Panda) as Mr. Hinkle