Criterion Collection

In one of his most finely tuned performances, Peter Sellers plays the pure-hearted, childlike Chance, a gardener who is forced into the wilds of Washington, D.C., when his wealthy guardian dies. Shocked to discover that the real world doesn’t respond to the click of a remote, Chance stumbles into celebrity after being taken under the wing of a tycoon (Melvyn Douglas, in an Oscar-winning performance), who mistakes his protégé’s horticultural mumblings for sagacious pronouncements on life and politics, and whose wife (Shirley MacLaine) targets Chance as the object of her desire. Adapted from a novel by Jerzy Kosinski, this satire, both deeply melancholy and hilarious, is the culmination of Hal Ashby’s remarkable string of films in the 1970s, and a carefully modulated examination of the ideals, anxieties, and media-fueled delusions that shaped American culture during that decade.

Från IMDB:
After the death of his employer forces him out of the only home he's ever known, a simpleminded, sheltered gardener becomes an unlikely trusted advisor to a powerful tycoon and an insider in Washington politics.