These are the Top 100 movies at the American Box office for the 1970s according to wikipedia

So what are your fsvourites from this list

1:Love Story-1970
2:Airport
3:MASH
4:Patton
5:The Aristocats
6:Woodstock
7:Little Big Man
8:Ryan's Daughter
9:Tora! Tora! Tora!
10:Chariots Of The Gods

11:Fiddler On The Roof-1971
12:The French Connection
13:Diamonds Are Forever
14:Dirty Harry
15:Summer Of 42
16:The Last Picture Show
17:Carnal Knowledge
18:A Clockwork Orange
19:Bedknobs and Broomsticks
20:Sweet Sweetback's Baadasssss Song

21:The Godfather-1972
22:The Poseidon Adventure
23:What's Up Doc
24:Behind The Green Door
25:Deliverance
26:Deep Throat
27:Jeremiah Johnson
28:Cabaret
29:The Getaway
30:Fritz The Cat

31:The Exorcist-1973
32:The Sting
33:American Graffiti
34:Papillon
35:The Way We Were
36:Magnum Force
37:Last Tango In Paris
38:Live and Let Die
39:Robin Hood
40:Paper Moon

41:Blazing Saddles-1974
42:The Towering Inferno
43:Young Frankenstein
44:Earthquake
45:The Godfather Part II
46:Airport 1975
47:The Life and Times Of Grizzly Adams
48:The Longest Yard
49:Benji
50:Herbie Rides Again

51:Jaws-1975
52:The Rocky Horror Picture Show
53:One Flew Over The Cuckoo's Nest
54:Dog Day Afternoon
55:Shampoo
56:The Return Of The Pink Panther
57:Three Days Of The Condor
58:Funny Lady
59:The Apple Dumpling Gang
60:Aloha,Bobby and Rose

61:Rocky-1976
62:To Fly!
63:A Star Is Born
64:All The Presidents Men
65:The Omen
66:In Search Of Noah's Ark
67:King Kong
68:Silver Streak
69:The Enforcer
70:Midway

71:Star Wars Episode IV:A New Hope-1977
72:Close Encounters Of The Third Kind
73:Saturday Night Fever
74:Smokey and The Bandit
75:The Goodbye Girl
76:The Rescuers
77:Oh God!
78:A Bridge Too Far
79:The Deep
80:The Spy Who Loved Me

81:Grease-1978
82:Superman
83:Natonal Lampoon's Animal House
84:Every Which Way But Loose
85:Heaven Can Wait
86:Hooper
87:Jaws 2
88:Halloween
89:Dawn Of The Dead
90:The Deer Hunter

91:Kramer vs Kramer-1979
92:The Amityville Horror
93:Rocky II
94:Apocalypse Now
95:Star Trek:The Motion Picture
96:Alien
97:The Muppet Movie
98:10
99:The Jerk
100:Moonraker

Academy Awards Best Pictue Winners
Annie Hall

My Favourites from the 70s

Dirty Harry
Summer Of 42
The Last Picture Show
The Godfather
The Poseidon Adventure
The Way We Were
The Towering Inferno
The Godfather Part II
Jaws
Dog Day Afternoon
Rocky
The Deep
National Lampoon's Animal House
Every Which Way But Loose
Hooper
Kramer vs Kramer
Rocky II
10
Annie Hall

The only one on that list I’ve seen to date is Star Wars Episode IV:A New Hope [and even that, only part]