The Adventures Of Sid The Science Kid In Grouchland

Cast

 * Arthur (from Arthur) as Big Bird
 * Sid (from Sid the Science Kid) as Elmo
 * Hacker (from Cyberchase) as Oscar the Grouch
 * Ruff Ruffman (from Fetch! with Ruff Ruffman) as Bert
 * Digit (from Cyberchase) as Ernie
 * Buster (from Arthur) as Cookie Monster
 * Matt (from Cyberchase) as Grover
 * D.W. (from Arthur) as Prairie Dawn
 * The Cat in the Hat (from The Cat in the Hat Knows a Lot About That!) as Count von Count
 * Baby Bop (from Barney and Friends) as Zoe
 * Sagwa (from Sagwa, the Chinese Siamese Cat) as Rosita
 * T-Bone (from Clifford the Big Red Dog) as Telly Monster
 * Brother Bear (from The Berenstain Bears) as Baby Bear
 * Ed Crosswire (from Arthur) as Mr. Johnson
 * Gerald (from Sid the Science Kid) as Bug
 * Gabriella (from Sid the Science Kid) as Grizzy
 * Caillou's Dad (from Caillou) as Stuckweed
 * Caillou's Mom, Leo, Clementine, Jason, Jeffrey, Sarah, Xavier and Andre (from Caillou) as Pesties
 * Ramone (from Peg + Cat) as Grouch Mayor