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Tear Jerker: Harriet the Spy
When Ole Golly leaves. It's done very well in the film too — even if you don't like Rosie O'Donnell, her stalwart face as she leaves, telling Harriet not to laugh or cry, will draw exactly the latter reaction from you.
In the film, when Harriet notices that the Crazy-cat-man had all his cats taken away.
"I will always remember that face. That's the face you make when you really lose something."