Everyone's done a wonderful job of listing all the shows that mattered for about 60 years or so!
I can't say any of them are shows I
used to love, though - I still love them and watch some of them
(mostly on MeTV before bedtime).
I'll toss in some (obscure?) more modern ones I haven't seen mentioned yet:
1. The Adventures of Brisco County Jr.
2. Mystery Science Theater 3000
3. Corner Gas
4. Late Late Show With Craig Ferguson
5. Good Eats
6. Bosch (both iterations)
What I consider the best two shows of modern times:
Better Call Saul especially was Breaking Bad on steroids - a better collection of writing,
producing and acting will never come together on a TV series again IMO.
Similar opinion on Justified - but no, I don't like the brand new one that's out now.
Miscellaneous - we also quite enjoy:
1. The Grand Tour
2. Top Gear (with the correct three hosts)
3. Clarkson's Farm
4. Fargo - any season of it
5. Yellowstone
6. Boardwalk Empire (monumental series!)
7. Whose Line is it Anyways?