The quote is actually "Judy, Judy, Judy." My recollection is that many voice impersonators used that as a Cary Grant quote, but he had never actually said it. Being quite tired of trying to correct...
Julie! Julie! is by Lucky Dube
She is Julie of the wolves, if that is what you are asking. She has a different eskimo name.
Are is used when referring to more than one. therefore, in this context the word should be are.
Her most famous film credits are the title role in Mary Poppins and Maria in The Sound of Music.