[PaulHoule]

I counterpoint it to the video game/visual novel Danganronpa which is a literal battle between Hope and Despair in which these emotions are held to be contagious.

Another is the musical "The Music Man" in which the "Music Man" is a huckster who brings out the talent latent in the community.

[wyldfire]

Interesting that the male lead of "The Music Man," (film and stage versions) Robert Preston, also starred in a film where he brings out the talent latent on Earth. In "The Last Starfighter" a huckster named Centauri places an arcade game in various places as a sort of "Excalibur" test to find twitch-game experts who could defend the Star League's Frontier against Xur and the Kodan Armada.

For your further pop culture enjoyment: fans of stories like these may enjoy a more modern version -- Ernest Cline's "Armada" shares many similarities. You might remember Cline from such films as "Fanboys" and "Ready Player One." I imagine "Armada" will get its own film adaptation someday.