At what point do we say we 'watched' a series? Just one episode? A whole season? These are some that stand out for me in the 70s.
Battle of the Network Stars - I've watched every episode at least twice, when I discovered this on Youtube (I believe it was a race between David Letterman and Billy Crystal) I immediately went to a website to purchase the entire series on dvd and it did not disappoint at all, probably my favorite show from this period in tv
MASH - I have seen most of this series but not all, the latter seasons make it hard to watch
All in the Family - I've seen most of the first few seasons
Happy Days - I've seen the first five seasons (got them on dvd) and some of the later ones
Mork and Mindy - this is a spinoff from Happy Days and I tried to watch it a few years back but it was really really bad, as much as I want to like Robin Williams I got so sick of his Mork routine
The Rockford Files - the first season only, so far
The Love Boat - seen the first two seasons
Angie - I did see this whole series on dvd, it only lasted two, but I enjoyed it mostly because of the lead Donna Pescow
Buck Rogers - another series that lasted only two seasons but I've seen them all, it's campy and silly and yet entertaining, Erin Gray mesmerizing in those tight outfits
Columbo - I've seen the first two seasons
Six Million Dollar Man - seen the first three seasons
Three's Company - I am sure I have seen this entire series
I am currently working on two tv series. One is Deep Space Nine. I'm nearly done with season one. The other is the original Magnum PI, where I am a few episodes into season two.

'
The
FANTASTIC
Journey
'!!
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

How many shows from the 70's have you watched?
Most likely, most of them when they first aired. I've been around since 1955.
You asked a pretty question; I've given you the ugly answer.
Fasten Your Seatbelts….
It's Going To Be A Bumpy Night!

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The After School Specials (not a lot, but some)
Alias Smith and Jones
Alice
All in the Family
Angie
Archie Bunker's Place (spinoff of All in the Family)
Banacek
Baretta
Barnaby Jones
Barney Miller
Battlestar Galactica
Benson
Black Sheep Squadron
Buck Rogers in the 25th Century
CHiPS
Cannon
Charlie's Angels
Cher
Chico and the Man
Columbo
Dallas
Diff'rent Strokes
Eight is Enough
Emergency
Fantasy Island
Fish
Good Times
Happy Days
Harry O
Heart to Heart
Hello Larry
Knots Landing
Kojak
Kolchak: The Night Stalker
Laugh-In
Lavern and Shirley
Little House on the Prairie
Lou Grant
Mash
Mary Tyler Moore Show
Mary Hartman, Mary Hartman
Maude
McCloud
McMillan and Wife
Mork and Mindy
One Day at a Time
Police Story
Quincey ME
Rhoda
SWAT
Sanford and Son
SNL
Shirley
Soap
Starsky and Hutch
Switch
Taxi
Betty White Show
Bionic Woman
Bob Newhart Show
Brady Bunch
Captain and Tenille
Don Ho Show
Don Knotts Show
Dukes of Hazzard
Facts of LIfe
Hardy Boys/Nancy Drew Mysteries
Jeffersons
Jim Nabors Show
Love Boat
Odd Couple
Partridge Family
Richard Pryor Show
Rockford Files
Ropers
Six Million Dollar Man
Sixth Sense
Sonny and Cher Show
Streets of San Francisco
Waltons
White Shadow
Three's Company
Trapper John MD
Vegas
WKRP Cincinnatti
Welcome Back Kotter
What's Happening
Wonder Women

A LOT of GOOD and GREAT (FUN) television shows back then! MORE ENJOYABLE than the SHIT (FECAL WASTE aka BOWEL MOVEMENT) that's put it NOWADAYS!!
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Holy crap

Space Sentinels
Josie and the Pussy Cats in Outer Space
Lotsa Luck!
And others…
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

The $10,000 Pyramid
The $25,000 Pyramid
Hello, Larry
Soul Train
Operation Petticoat
The Bad News Bears
Partridge Family 2200 AD
Jabberjaw
The Lost Saucer
Speed Buggy
Challenge of the Superfriends
Jeannie
The Captain and Tennille
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Lou Grant
Archie Bunker's Place
The Sixth Sense
Super Friends
Fat Albert and the Cosby Kids
The Gong Show
The Sonny and Cher Comedy Hour
The Misadventures of Sheriff Lobo
Sha Na Na
Wheel of Fortune
Family Feud
Josie and the Pussycats
Wait Till Your Father Gets Home
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Schoolhouse Rock
The Incredible Hulk
Wonder Woman
Rowan & Martin's Laugh-In
Benson
Buck Rogers in the 25th Century
The Amazing Spider-Man
Shazam!
McMillan & Wife
Logan's Run
Banacek
Mary Hartman, Mary Hartman
Man from Atlantis
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Mork and Mindy
The White Shadow
Supertrain
Cliffhangers
The Curse of Dracula
Stop Susan Williams
The Secret Empire
Hart to Hart
Trapper John, MD
House Calls
BJ and the Bear
The Carol Burnett Show
The Muppet Show
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Switch
Family
Delvecchio
The Nancy Walker Show
Quincy, ME
CPO Sharkey
The McLean Stevenson Show
The Hardy Boys/Nancy Drew Mysteries
Eight is Enough
James at 15
Dallas
Vega$
The Paper Chase
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

The Streets of San Francisco
The Paul Lynde Show
Barnaby Jones
Police Story
Kojak
Harry O
Chico and the Man
Police Woman
Get Christie Love
Baretta
The Jeffersons
SWAT
Starsky and Hutch
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Welcome Back, Kotter
The Waltons
Kung Fu
Hawaii Five-0
The Brady Bunch
Columbo
Fawlty Towers
WKRP In Cincinnati
Adam-12
Marcus Welby, MD
Mission: Impossible
The Odd Couple
Cannon
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

The Six Million Dollar Man
Battlestar Galactica
The Invisible Man
MAS*H
Star Blazers
Barney Miller
The Bionic Woman
TAS
The Rockford Files
The Incredible Journey
Kolchak: The Night Stalker
Emergency!
Soap
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Little House On The Prairie
Happy Days
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Eight is Enough
Baa Baa Black Sheep
Grizzly Adams
Charlie's Angels
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Do The Monkeys and American Bandstand fit in the 1970's ?

From 1975-1979 these are some of the shows we'd watch but not as a family. My dad didn't watch TV except Baa Baa Black Sheep and I always hoped he'd forget because Eight is Enough was on at the same time. My mother worked nights, so she was never around.
Monday
Little House
Tuesday
Happy Days
Laverne & Shirley
Three's Company
Wednesday
Eight is Enough
Baa Baa Black Sheep
Grizzly Adams
Charlie's Angels
Saturday
The Love Boat
SNL
Sunday
Alice
One Day at a Time
Also Welcome back, Kotter. But I don't remember what nights it was on.

All in the Family
The Mary Tyler Moore Show
Sanford and Son
The Bob Newhart Show
Night Gallery
Love American-Style
The Love Boat
Fantasy Island
Saturday Night Live
“Call a SPADE, a SPADE; and a TRANNY, a TRANNY, or an IT!!!”.
"THAT'S SOME BAD
SHIT
,
HARRY
!".

Favorites included All in the Family, Mary Tyler Moore, Sanford and son, The Bob Newhart show, night gallery, Love American Style, The Love Boat, Fantasy island-and Saturday night live. Also loved watching The Movie of the Week.
Dini

Dozens. I was an adult in the 1970s.

A simple "John" or "Mary" would have sufficed.
"My life is over. I might as well dance with Johnny Slash!"