Love & Mercy (film) stars American actor Paul Giamatti.
Love & Mercy (film) . Paul Dano and John Cusack star as the young and middle-aged Wilson , respectively , with Elizabeth Banks as Wilson 's second wife Melinda Ledbetter , and Paul Giamatti as Wilson 's psychotherapist Dr. Eugene Landy . Paul Edward Valentine Giamatti ( [ dʒiəˈmɑːti ] born June 6 , 1967 ) is an American character actor and producer .