Baby Ruth in Caddyshack (1980)
Appearing in 1980, this may be one of the
earliest appearances of a brand name
candy bar in a feature film.
In the movie Caddyshack, the Baby Ruth is
used as part of a prank and mistaken by
swimmers as fecal matter in the infamous
swimming pool scene.
Obviously, this wasn't a paid placement.
Scenes and video follow...