In the movie Clambake, Elvis Presley played a wealthy chemical engineer who is the son of a wealthy oil baron. As part of the plot, Elvis develops a new varnish that helps him win a boat race and impress the girl. According to the book ReAction!: Chemistry in the Movies by Griep and Mikasen, the varnish, called GOOP in the movie, is based on a real varnish that dissolves in water.
Sadly, movie this appears to be one of Elvis's poorer efforts. Its main sin is that the songs are forgettable; after all, one doesn't watch an Elvis movie for the plot.