Gustav Fechner
Fechner, along with Wilhelm Wundt and Hermann von Helmholtz, is recognized as one of the founders of modern experimental psychology. His clearest contribution was the demonstration that because the mind was susceptible to measurement and mathematical treatment, psychology had the potential to become a quantified science. Theorists such as Immanuel Kant had long stated that this was impossible, and that therefore, a science of psychology was also impossible.
Lovesick (1983 film)
The ghost of Dr. Sigmund Freud, the father of modern psychology, visits Dr. Benjamin from time to time to dispense warnings and wisdom. Benjamin's work begins to suffer as he abandons patients like Mrs. Mondragon, finding her tedious, and treats the paranoia of another, Marvin Zuckerman, by designing a peculiar handmade hat for him to wear.