“The Life of Chuck,” a slick but ickily grandiose reminder to take your dance lessons while you can, also reminds us that every generation gets its own variations on “It’s a Wonderful Life” — movie fantasies designed for affirmation and comfort, while unnerving us a little.

There’s a third reminder, too: One person’s eyeroll is another’s shattering and beautiful reminder that life is beautiful, maybe harsh and sometimes lonely and full of wrong turns with a possible apocalypse looming. But beautiful.

This latest Stephen King screen adaptation is written and directed by Mike Flanagan, best known for “The Haunting of Hill House” on Netflix, along with “Oculus,” “Before I Wake,” “Doctor Sleep” and other features. Elements of all this find a home somewhere in the running time of “The Life of

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