"The Incredible Mr. Limpet" 1964

Meek and mild mannered bookkeeper Henry Limpet has few passions in life. It's mid-1941 and he would love to join the Navy but has been rated 4F.

The Incredible Mr. Limpet is a 1964 American live-action/animated comedy film produced by Warner Bros. and based on the 1942 novel Mr. Limpet by Theodore Pratt