To keep the decades going, here's my list for the 1950s. There are some great movies here and as a classic film fan I have to say, they really don't make them like they used to. They make great movies now too, just not like they used to :) As I've been doing, I'll post my overall year by year list for this decade, with the top three of each year highlighted. I'll follow that with the ranking.
All About Eve (1950)
Born Yesterday (1950)
Cinderella (1950)
Los Olvidados (1950)
Night and the City (1950)
Rashomon (1950)
Rio Grande (1950)
Sunset Blvd. (1950)
The Asphalt Jungle (1950)
The Damned Don't Cry (1950)
The Flowers of St. Francis (1950)
Variety Lights (1950)
A Streetcar Named Desire (1951)
Ace in the Hole (1951)
Alice in Wonderland (1951)
An American in Paris (1951)
Diary of a Country Priest (1951)
Early Summer (1951)
Strangers on a Train (1951)
The African Queen (1951)
The Day the Earth Stood Still (1951)
The River (1951)
Flavor of Green Tea Over Rice (1952)
Forbidden Games (1952)
Ikiru (1952)
Limelight (1952)
Monkey Business (1952)
Singin' in the Rain (1952)
The Greatest Show on Earth (1952)
Umberto D. (1952)
From Here to Eternity (1953)
Gentlemen Prefer Blondes (1953)
I Confess (1953)
Mr. Hulot's Holiday (1953)
Peter Pan (1953)
Roman Holiday (1953)
The Big Heat (1953)
The Earrings of Madame de... (1953)
The Long, Long Trailer (1953)
The Wages of Fear (1953)
Tokyo Story (1953)
Ugetsu (1953)
Dial M for Murder (1954)
Godzilla (1954)
La Strada (1954)
Magnificent Obsession (1954)
On the Waterfront (1954)
Rear Window (1954)
Sansho the Bailiff (1954)
Seven Brides for Seven Brothers (1954)
Seven Samurai (1954)
Twenty-Four Eyes (1954)
Diabolique (1955)
East of Eden (1955)
Killer's Kiss (1955)
Lady and the Tramp (1955)
Ordet (1955)
Rebel Without a Cause (1955)
Rififi (1955)
The Night of the Hunter (1955)
The Seven Year Itch (1955)
The Trouble with Harry (1955)
To Catch a Thief (1955)
Around the World in Eighty Days (1956)
Baby Doll (1956)
Crazed Fruit (1956)
Early Spring (1956)
Forbidden Planet (1956)
Giant (1956)
Invasion of the Body Snatchers (1956)
The Killing (1956)
The Man Who Knew Too Much (1956)
The Searchers (1956)
The Ten Commandments (1956)
The Wrong Man (1956)
12 Angry Men (1957)
A Face in the Crowd (1957)
An Affair to Remember (1957)
Desk Set (1957)
Funny Face (1957)
Love in the Afternoon (1957)
Nights of Cabiria (1957)
Paths of Glory (1957)
The Bridge on the River Kwai (1957)
The Cranes are Flying (1957)
The Enemy Below (1957)
The Lower Depths (1957)
The Seventh Seal (1957)
Throne of Blood (1957)
Tokyo Twilight (1957)
Wild Strawberries (1957)
A Night to Remember (1958)
Equinox Flower (1958)
Indiscreet (1958)
Ivan the Terrible, Part II (1958)
Mon Oncle (1958)
The Hidden Fortress (1958)
Touch of Evil (1958)
Vertigo (1958)
Ballad of a Soldier (1959)
Ben-Hur (1959)
Black Orpheus (1959)
Floating Weeds (1959)
Good Morning (1959)
Hiroshima Mon Amour (1959)
Letter Never Sent (1959)
North by Northwest (1959)
Pickpocket (1959)
Sleeping Beauty (1959)
Some Like It Hot (1959)
The 400 Blows (1959)
The World of Apu (1959)