Law & Order
Upstairs, Downstairs
Fawlty Towers
Home Movies
South Park
Lou Grant
King of the Hill
Mary Hartman, Mary Hartman
Monk
Twin Peaks
Honorable Mention: Scooby-doo
Doctor Whos
Six Feet Under
Lost
Battlestar Galactica (new)
Firefly
Buffy/Angel
Star Treks
Caprica
How I Met Your Mother
Being Erica
Some old, some new:
Seinfeld
Star Trek: The Next Generation
Star Trek: Deep Space Nine
Frasier
Archer
My Name Is Earl
Hill Street Blues
Game of Thrones
MASH
Hogan’s Heroes
*
ST-TOS
Babylon 5
Magnum, P.I. (hey, I was a young female when it was on and Selleck was HOT)
Hill Street Blues
WKRP in Cincinatti
Dr. Who(Pertwee, Baker, Davison)
Farscape
Jeopardy!
Barney Miller
The BBC prduction of I, Claudius
Ask This Old House
Breaking Bad
Connections (there were 2 sequels, i will consider this a 3 season show)
Fear Factor
Hill Street Blues
Monty Python’s Flying Circus
Mythbusters
NOVA
Simpsons
Twin Peaks
Doctor Who
House
CSI
Elementary
Star Trek: TOS
Big Bang Theory
Hill Street Blues
Frasier
Father Ted
MAS*H
Honorable mentions: Roseanne and Boy Meets World
Now that Justified has wrapped, it may be worth revisiting this issue. If you want to change your list, please quote your earlier post(s) and do so.
If you have yet to post here, what are your Top Ten All-Time Favorite TV Shows.
“China Beach”
“On Scene: Emergency Response”
“American Gladiators”
“Twin Peaks”
“American Gladiators”
“Amen!”
'Wings"
“Lawrence Welk”
NFL Football
Interesting variety.
[ol]
[li]Doctor Who[/li][li]Star Trek (No bloody TNG, DS9, VOY, or ENT)[/li][li]Nova[/li][li]Saturday Night Live[/li][li]Northern Exposure[/li][li]Babylon 5[/li][li]Sports Night[/li][li]Six Feet Under[/li][li]Big Bang Theory[/li][li]Breaking Bad[/li][/ol]
Pushing Daisies
Community
Parks & Recreation
Seinfeld
Game of Thrones
MASH
Star Trek TOS
Buffy the Vampire Slayer
Friends
Law and Order when Lenny was on
I stayed with American shows just to keep the list down but I could have added some Britcoms and Korean Historical Dramas that I watched with subtitles.
I can’t believe I left One Day at a Time off the list. I’ll respectfully withdraw Mary Hartman, Mary Hartman, or King of the Hill (I need to think about it). But I practically lived for ODaaT when I was in junior high. I used the run the last block of my paper route to make sure I was home in time to catch the afternoon rerun, no matter how many times I’d seen it before.
PBS series James Burke - Connections
Start Trek -
Mash -
Bob Ross - The Joy of Painting (a hug for the brain)
original National Geographic - Major family viewing show (still get excited when I hear the theme song)
All in the Family
WKRP
Seinfeld
Friends
Night Court
The Night Stalker
Mission Impossible
Baa Baa Blacksheep
The Professionals
UFO
SOAP
Star Trek TOS
Machale’s Navy
The Thin Blue Line
Highlander
Ally McBeal
MASH
NCIS
CSI
Law and Order
The Prisoner
Star Trek
Rockford Files
Forensic Files
Dirty Jobs
The X-Files
Haven
Hart of Dixie
Primeval
Dawson’s Creek
One Tree Hill
Buffy The Vampire Slayer
CSI
Fringe
e.r.
No way I can list just ten. To cover all my favorites I’d have to break them down by genre and decade. 
In no particular order:
Barney Miller
Fawlty Towers
The Good Wife
Pushing Daisies
So You Think You Can Dance
The Sing-off
Six Feet Under
Law & Order (the original series)
Sports Night
House
Just so latecomers to this thread may know, there was a follow-up thread last year at…
Let’s discuss where to go next with the “Top TV Shows” issue…
07-04-2014, 09:02 AM
…with two posts that attempted to summarize things:
http://boards.straightdope.com/sdmb/showpost.php?p=17519950&postcount=6
http://boards.straightdope.com/sdmb/showpost.php?p=17521897&postcount=12
I don’t plan on any additional poll(s) as further follow-up so if anyone else would like to take on that project, please do so with my blessings. 
Monty Python
Fawlty Towers
Sopranos
Game of Thrones
Hogans Heroes
NYPD Blue
Law and Order SVU
Gong Show
Lost in Space
Emergency