Our professor had to finish the classes one hour earlier, and now I'm in the PC room. I'll try to finally come up with my own list. "> 

The 60s are really my favorite decade in film history, shortly followed by the 70s, 20s and 10s. Although the (early) 70s also contain some of the most outstanding films ever made, there's already a decline if you look at a bigger scale. Somehow I have the feeling that cinema was at a similar highpoint in the 60s as it had been the case in the 20s during the silent era. Since then a lot has happened, and through sound and colors new possibilities were added to the films. Seeing just how alive and vibrant most of those films still feel today, it must have been a joy going to festivals during the 60s, witnessing so much creativity from all around the world focused on the screen. 
I tried to list only the truly outstanding films I have seen so far (as usual, I have seen too little), with a seperate list for possible contenders that might make it onto the list in the future after one (or more) rewatches. 
Of course some films may raise an eyebrow or two, but hey, that's what I love. "> 

1960 
Jungfrukällan The Virgin Spring (Ingmar Bergman / Sweden) 
La Dolce Vita The Sweet Life (Federico Fellini / Italy) 
Peeping Tom (Michael Powell / UK) 
Psycho (Alfred Hitchcock / USA) 

1961 
Chronique d'un été Chronicle of a Summer (Edgar Morin, Jean Rouch / France) 
Cléo de 5 à 7 Cleo from 5 to 7 (Agnès Varda / France, Italy) 
Judgment at Nuremberg (Stanley Kramer / USA) 
Ples v dezju Dancing in the Rain (Bostjan Hladnik / Yugoslavia) 
The Innocents (Jack Clayton / UK) 
Viridiana (Luis Bunuel / Spain, Mexico) 

1962 
Antoine et Colette Antoine and Colette (Francois Truffaut / France) 
Carnival of Souls (Herk Harvey / USA) 
La Jetée The Pier (Chris Marker / France) 
Lawrence of Arabia (David Lean / UK) 
Mamma Roma (Pier Paolo Pasolini / Italy) 
Noz w wodzie Knife in the Water (Roman Polanski / Poland) 
Sanma no aji An Autumn Afternoon (Yasujiro Ozu / Japan) 
Subarnarekha (Ritwik Ghatak / India) 
Vivre sa vie: Film en douze tableaux My Life to Live (Jean-Luc Godard / France) 

1963 
Charade (Stanley Donen / USA) 
El Naser Salah el Dine Saladin (Youssef Chahine / Egypt) 
I Fidanzati The Fiances (Ermanno Olmi / Italy) 
Le Mpris Contempt (Jean-Luc Godard / France) 
The Birds (Alfred Hitchcock / USA) 

1964 
Cern Petr Black Peter (Milos Forman / Czechoslovakia) 
Demanty noci Diamonds of the Night + Sousto A Bite to Eat (1964 + 1960 / Jan Nemec / Czechoslovakia) 
Deus E o Diabo na Terra do Sol Black God, White Devil (Glauber Rocha / Brazil) 
Gertrud (Carl Theodor Dreyer / Denmark) 
La Drive (Paula Delsol / France) 
La peau douce The Soft Skin (Francois Truffaut / France, Portugal) 
Rysopis Identification Marks: None (Jerzy Skolimowski / Poland) 
Suna no onna Woman in the Dunes (Hiroshi Teshigahara / Japan) 

1965 
A Patch of Blue (Guy Green / USA) 
Dai-bosatsu toge The Sword of Doom (Kihachi Okamoto / Japan) 
Hakop Hovnatanyan (Sergei Parajanov / Soviet Union) 
Now (Santiago lvarez / Cuba) 
Tokyo nagaremono Tokyo Drifter (Seijun Suzuki / Japan) 

1966 
Andrei Rublyov Andrei Rublev (Andrei Tarkovski / Soviet Union) 
Au hasard Balthazar Balthazar (Robert Bresson / France, Sweden) 
Blowup (Michelangelo Antonioni / UK, Italy) 
Django (Sergio Corbucci / Italy, Spain, France) 
Il buono, il brutto, il cattivo The Good, The Bad and The Ugly (Sergio Leone / Italy, Spain) 
Sedmikrasky Daisies (Vera Chytilov / Czechoslovakia) 

1967 
48 Stunden bis Acapulco 48 hours to Acapulco (Klaus Lemke / West Germany) 
Bonnie and Clyde (Arthur Penn / USA) 
Csillagosok, katonak The Red and The White (Miklos Jancso / Hungary, Soviet Union) 
Edipo re Oedipus Rex (Pier Paolo Pasolini / Italy, Morocco) 
Elvira Madigan (Bo Widerberg / Sweden) 
Ji-uchi: Hairy tsuma shimatsu Samurai Rebellion (Masaki Kobayashi / Japan) 
Koroshi no rakuin Branded to Kill (Seijun Suzuki / Japan) 
Le Samoura The Godson (Jean-Pierre Melville / France) 
Midaregumo Scattered Clouds (Mikio Naruse / Japan) 
Playtime (Jacques Tati / France) 
The Fearless Vampire Killers (Roman Polanski / UK, USA) 

1968 
2001: A Space Odyssey (Stanley Kubrick / USA, UK) 
Abschied Farewell (Egon Gnther / East Germany) 
Chronik der Anna Magdalena Bach The Chronicle of Anna Magdalena Bach (Danile Huillet, Jean-Marie Straub / West Germany, Italy) 
Eltavozott nap The Girl (Marta Meszaros / Hungary) 
Goto, l'le d'amour Goto, Island of Love (Walerian Borowczyck / France) 
Rosemary's Baby (Roman Polanski / USA) 
Salesman (Albert Maysles, David Maysles, Charlotte Zwerin / USA) 
Sayat Nova The Color of Pomgranates (Sergej Paradjanov / Soviet Union) 
Teorema Theorem (Pier Paolo Pasolini / Italy) 
Vixen! (Russ Meyer / USA) 
Yabu no naka no kuroneko Black Cat from the Grave (Kaneto Shind / Japan) 

1969 
Bao biao Have Sword Will Travel (Chang Cheh / Hong Kong) 
Hsia nu A Touch of Zen (King Hu / Taiwan) 
Ich nicht (Wolfgang Petersen / West Germany) 
On her Majesty's Secret Service (Peter R. Hunt / UK, USA) 
Othon (Jean-Marie Straub, Danile Huillet / West Germany, Italy) 
Take the Money and Run (Woody Allen / USA) 

by country: 

USA: 12 
France: 12 
Japan: 8 
Italy: 7 
UK: 6 
West Germany: 4 
Czechoslovakia: 3 
Soviet Union: 3 
Hungary: 2 
Poland: 2 
Sweden: 2 
Brazil: 1 
Cuba: 1 
Denmark: 1 
East Germany: 1 
Egypt: 1 
Hong Kong: 1 
India: 1 
Spain: 1 
Taiwan: 1 
Yugoslavia: 1 
________________ 

Total: 71 

*added Chang Cheh's Heroic Bloodshed Movie "Have Sword Will Travel" (1969), as well as Luis Bunuel's Viridiana (1961).