De Niro reprises his role of Jon Rubin from Greetings ( 1968 ) .
Hi , Mom ! is a 1970 American black comedy film by Brian De Palma , and is one of Robert De Niro 's first movies .
Robert De Niro   reprises Robert De Niro 's role of Jon Rubin from Greetings ( 1968 ) .
Hi , Mom ! is a 1970 American black comedy film by Brian De Palma , and is one of Robert De Niro 's first movies .