Answer: harvey

AnswerCrossword Clue
HARVEYActor Keitel
HARVEYElwood's friend
HARVEYMemorable invisible rabbit
HARVEYOscar role for Sean
HARVEYInvisible rabbit of film
HARVEYEnglish doctor, discoverer of blood circulation.
HARVEYPulitzer Prize play.
HARVEYStage rabbit.
HARVEYActor Keitel's favorite J.S. film?
HARVEYPolitico Milk of "Milk"
HARVEY1950 Jimmy Stewart film
HARVEY1950 Stewart film
HARVEYPlay with an imaginary friend