"It is the thought and circumstances behind the action that will make the action interesting. Example: A man walks up to a mailbox, drops in his letter and walks away. OR A man desperately in love with a girl far away carefully mails a letter in which he has poured his heart out."

Frank & Ollie’s Official Site: Notes From Ollie - Notes from Ollie Johnston, legendary Disney animator, that also apply to everything about making a good film.