18 Again! (1988)

Director: Paul Flaherty
Cast: Charlie Schlatter, George Burns, Jennifer Runyon, Michael J. Shea, Miriam Flynn, Pauly Shore, Red Buttons, Tony Roberts

Synopsis:

18 Again! is a 1988 comedy film starring George Burns and Charlie Schlatter. The plot involves a grandson switching souls with his grandfather by means of an accident. This was one of a series of unrelated films, including Like Father, Like Son and Vice Versa, produced in the late 1980s involving a similar plotline.