Mr. Sycamore (1975)
A mail man goes a little nutty and decides he wants to become a tree. Yes, you read that correctly.
An unusual but affectionate story of a man's longing for his ideal of peace and serenity. A postman and part-time poet is inspired by the Greek legend of the two elderly guards at Jupiter's temple who are transformed into beautiful trees. His wife has him committed when he stands in his backyard awaiting the same metamorphosis to take place. With the help of a friendly librarian, he escapes in a milk truck during a violent storm.