Sesame Street (1969)

S53E21 Grouch-ercise

Oscar has been in a bad mood all day, so Elmo, Abby, Grundgetta, and Nina brainstorm various exercises to lift his spirits. As they prepare to share their ideas with Oscar, they encounter him coming back from a lengthy, grumpy walk where he was picking up litter. Surprisingly, Oscar is feeling better and quickly returns to his usual mix of good and grumpy.