By accident, the content of a computer encyclopedia is transferred into the brain of Dexter Riley, a less than average college boy. Because of his newly acquired knowledge he competes in a quiz show between various universities, where he sweeps all the points. A wiz kid from another university finds out about his cheated wisdom and does everything to discredit Dexter.

Twin brothers -- one rough and tough, the other a city-bred milquetoast -- compete for their father's fortune.

Two rich children devise a way to escape their grandfather and visit their mother. Unfortunately for two hapless safe crackers, they become part of the plan.

Dexter Riley is a science student at Medfield College who inadvertently invents a liquid capable of rendering objects and people invisible. Before Dexter and his friends, Debbie and Richard Schuyler, can even enjoy their spectacular discovery, corrupt businessman A.J. Arno plots to get his greedy hands on it. Slapstick hijinks ensue as Dexter and his pals try to thwart the evil Arno before he can use the invisibility spray to rob a bank.

In the great Disney tradition of wild family fun, a young Kurt Russell stars as Steven Post - an ambitious mailroom clerk at a second-rate TV network. With his eye on the boardroom, and getting nowhere with the studio's top dog, he makes a career-changing discovery. His girlfriend's lovable pet chimp can pick a hit show every time! His secret for success turns into a madcap monkey business when he makes vice president and jealous rivals want in on the act. Ride along with narrow escapes and a classic cast featuring Joe Flynn and Harry Morgan in a comedic climb up the corporate ladder that will leave you howling for more!