Got 6 Oscars in 1966, including Best Picture. Excellent historical drama.
The Ruling Class, 1972, black comedy
Bedazzled, 1967
Don't Look Now, 1973.

Still remember who was wearing the red raincoat...

Young Frankenstein, Taking of Pelham One Two Three, Harold and Maude, Harper Valley PTA, Life of Brian, Man Who Shot Liberty Vallance.

Monty Python -- Holy Grail and Life of Brian

again. It captures a lot of the fear and emotions that were running strong w/ the Cold War at that time. The fear of war is still there, but there seems to be a lot more cooler heads in control today, other than the bellicose ones back then...

Judy Garland, Maximillan Schell, William Shatner (post WWII trial of Nazi judges)

The Pink Panther, 1963, first film in the series, with David Niven, Peter Sellers

West Side Story, 1961, with Natalie Woid, Richard Beymer, Rita Moreno

One Flew Over the Cuckoo's Nest, 1975, Jack Nicholson, Louise Fletcher (Nurse Ratched)

All the President's Men, 1976, Dustin Hoffman, Robert Redford

EDIT TO ADD:

American Graffiti, 1973, Ron Howard, Cindy Williams

But will. It's on my list.

The Fortune Cookie
Deliverance
One,Two,Three
The Sand Pebbles
12 Angry Men
American Graffiti
Dog Day Afternoon

The Sting

The Graduate

Lawrence of Arabia

2001: A Space Odyssey

Kramer vs. Kramer

Star Wars

... 2001 A Space Odyssey, Spartacus, The Apartment (won Best Picture), the first two Godfather movies (both won Best Picture), Alien, My Fair Lady (won Best Picture) ... why are you limiting yourself to just the 1960s and 1970s?

-- Ron

Lawrence of Arabia
Exodus

Gambit - 1966
Camelot - 1968
Dr. Zhivago - 1965
The Good, The Bad and the Ugly - 1967
Aguirre, The Wrath of God - 1972
all the Lone Wolf and Cub movies
all the Zatoichi movies
all the The Godzilla Showa Era movies

4 films starting with Born Losers (1967).

Billy Jack (1971).

The Trial of Billy Jack (1974).

Billy Jack Goes to Washington (1977).

Monty Python and the Holy Grail
Monty Python's Life of Brian
Doctor Zhivago
Lawrence of Arabia
West Side Story
Breakfast at Tiffany's
Jaws
All That Jazz
The Turning Point
Saturday Night Fever
Network
All the President's Men
To Kill a Mockingbird
The Apartment
The Birds
Rosemary's Baby
American Graffiti
An Unmarried Woman
Foul Play
Manhattan
Annie Hall
The Goodbye Girl
Star Trek the Motion Picture
Close Encounters of the Third Kind
Star Wars

fearturing the zero - x spaceplane . the assembly and take off in my my mind are something else.
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except for those that incorporated old news footage or were meant to be highly artistic during even the majority of the 60s--past the earliest part of the 60s--. Color became available in the 40s, became more widespread in the 50s , became even more prominent in the early'60s and by 1966 was absolutely the standard in all movies and tv--sans a handful of historical or artsy-type films or those produced in the early part of the 60s. Just saying... Remember Gone With the Wind and Wizard of Oz--both utilized color and stood for the Best Picture Oscar in 1939. Still, there were some good b&w movies made in 1961-62, so I suppose you might want to focus there (Judgement at Nuremberg, for example).

Manhattan
Paper Moon
Young Frankenstein
The Last Picture Show

as I said after the early 60s and specifically 1966 all was in color for both films and TVs UNLESS it was an artistic choice. My feeds (especially MSN) lately are so full of really erroneous and condescending articles (and those interminable clickbait "slide" presentations" of what "Baby Boomers miss, remember, treasure, but are unheard of today" --usually including things my own grandparents scarcely used/remembered. It has become obnoxious.

So was Rumble Fish, with the occasional glimpse of very stark colors, like the red & green fish in the aquarium when the whole rest of the shot is B&W.
The B&W really suits the mood of the movie. Very noire.
Pretty sure Elephant Man was B&W, too.

Fail Safe-scared the hell out of me when I saw it as a teenager.

Johnson, The Exorcist, Sorcerer, The Last Detail, Easy Rider

Midnight Cowboy (Ratso Rizzo!)

Rain Man (Judge Wapner!)

is "little big man"

the agony and the ecstasy, in harm's way

cool hand luke. butch cassidy and the sundance kid,

and my personal favorite from the era.
billy jack

Also,
What's Up Doc
The Ruling Class
Monty Python, all of them lol
Rocky Horror Picture Show
A Hard Day's Night
Help!
Blazing Saddles

Couldn’t resist.

I was surprised how much I liked those '70s movies, like "McCabe & Mrs. Miller," and have a much better appreciation for Westerns (lots of excellent one liners) and watch whenever one's on TV (had no idea a movie like "Sergeant Rutledge" existed!).

Before the pandemic, I had watched a few modern westerns.


Then the pandemic hit; that's when I started watching vintage western films. McCabe & Mrs. Miller is definitely on my need to watch list, along with a few other films.

Sean Connery and Audrey Hepburn.

1960 - The Little Shop of Horrors
1961 - Hustler
1962 - Days of Wine & Roses
1963 - 8½
1964 - 7 Days in May
1965 - Flight of the Phoenix
1966 - A Man for All Seasons
1967 - To Sir, with Love
1968 - The Swimmer
1969 - Goodbye, Mr. Chips
1970 - El Topo
1971 - Harold and Maude
1972 - Solaris
1973 - The Exorcist
1974 - The Conversation
1975 - Three Days of the Condor
1976 - All The President's Men
1977 - Close Encounters of the Third Kind
1978 - Invasion of the Body Snatchers
1979 - Stalker

Don't Look Now, The Bride Wore Black, Lady In A Cage, Games, The Night Walker, Sometimes A Great Notion, The Boys From Brazil

Still gives me shivers to think about it.

If you like Sandy Dennis. Has Michael Burns too, one of my favorites

The Devil’s Brigade
The Sound of Music
Chitty Chitty Bang Bang
Guess Who’s Coming To Dinner
Red Beard
Sholay
The Hula Girl and The Fullback

Catch-22 (1970 - Alan Arkin)
The Heartbreak Kid (1972 - Charles Grodin)
The In-Laws (1979 - Peter Falk, Alan Arkin)

...especially...
-Dr. No
-You Only Live Twice
-Man With the Golden Gun
-'Goldfinger'
-'Live and Let Die'
-'Thunderball'

...and their great musical themes!

Harakiri (also Japanese)

Charade

Dr. No

The Manchurian Candidate

Breakfast at Tiffany's (of course!)

From Russia with Love

On Her Majesty's Secret Service

My Fair Lady

Pale Flower (also Japanese)

West Side Story

Onibaba (Japanese again)

Carnival of Souls (Horror, but no gore)

Mary Poppins

In the Heat of the Night

One, Two, Three

Wiki article below links to each of the films and definition of Kitchen Sink Realism.



https://en.m.wikipedia.org/wiki/Kitchen_sink_realism

A classic sci-fi story.

Slap Shot

Richard Pryor: Live in Concert

Being There

Cabaret

Close Encounters of the Third Kind

The Producers, A Funny Thing Happened on the Way to the Forum, MASH, A Thousand Clowns

The Great Race (Jack Lemon, Tony Curtis, Peter Faulk, Natalie Wood)

Five Easy Pieces (Jack Nicholson, Karen Black)

Papillon (Dustin Hoffman, Steve McQueen)

Bedazzled (Dudley Moore, Peter Cook)

Serpico (Pacino, directed by Sidney Lumet)

The Party (Peter Sellers)

The Days of Wine and Roses (Jack Lemon, Lee Remick)

Beautiful San Franciscco scenery. And Michael Sarrazin (sigh.)

"The Mad Room" with Stella Stevens and Michael Burns (sigh again.) Beautiful British Columbia scenery

Easy Rider

Woodstock

2001: A Space Odyssey

Jesus Christ Superstar

Godspell

Hair

Rocky Horror Picture Show

Butch Cassidy and the Sundance Kid, and anything with either Paul Newman, Robert Redford, or both

any or all the Barbara Streisand movies

any or all the Jane Fonda movies, including Barbarella

any or all the Planet of the Apes movies