P

(x)Paint Your Wagon (1969)
(x)Paisan (1948)
(x)The Palm Beach Story (1942)
(x)The Parallax View (1974)
(x)A Passage to India (1984)
(x)The Passion of Anna (1970)
(x)Pather Panchali (1958)
(x)Paths of Glory (1957)
(o)Patton (1970)
(x)The Pawnbroker (1965)
(x)Payday (1973)
(x)Pelle the Conqueror (1988)
(o)The People Vs. Larry Flynt (1996)
(x)Persona (1967)
(x)Persuasion (1995)
(x)Le Petit Theatre de Jean Renoir (1974)
(x)Petulia (1968)
(x)The Philadelphia Story (1940)
(o)The Pianist (2002)
(o)The Piano (1993)
(x)Pickup on South Street (1953)
(x)The Pillow Book (1997)
(x)Pillow Talk (1959)
(o)The Pink Panther (1964)
(x)Pinocchio (1940)
(x)Pixote (1981)
(x)A Place in the Sun (1951)
(x)Places in the Heart (1984)
(o)Platoon (1986)
(x)Play Misty for Me (1971)
(x)The Player (1992)
(x)Playtime (1967)
(o)Point Blank (1967)
(o)Poltergeist (1982)
(x)Ponette (1997)
(x)Il Postino (The Postman) (1994)
(x)The Postman Always Rings Twice (1946)
(x)Pretty Baby (1978)
(x)Pride and Prejudice (1940)
(x)The Pride of the Yankees (1942)
(x)Prince of the City (1981)
(x)The Prisoner (1955)
(x)The Private Life of Henry VIII (1933)
(x)Prizzi's Honor (1985)
(x)The Producers (1968)
(o)Psycho (1960)
(x)The Public Enemy (1931)
(o)Pulp Fiction (1994)
(x)The Purple Rose of Cairo (1985)
(x)Pygmalion (1938)

I have seen 10/50 movies that begin with the letter P.