The Electric Company belongs to Sesame Workshop.
If I could add my own sketches to reach the 28minute mark, they would be:
Film: Rita on the Run Fish
Cartoon: Freak
Cast skit: The OU sound, for your viewing pleasure
Cast skit: Where the word "grouch" came from
Scanimate: shout
Cast skit: Strong/stronger/strongest paper towels
Scanimate: strong/stronger/strongest