What great tv series have you watched lately?

The messiah

Just finished the 4th season of Apple's "For All Mankind".
It was good.

Watched "The Diplomat" a while back, also very good.

Also, watched the series "Loudermilk" which was funny.

Since you didn't specify fiction, I have been absolutely hooked on British non-fiction comedy shows lately. American here, fwiw:

Taskmaster (2015) - 16 complete seasons and all kinds of specials freely available on YT in US. Channel: https://www.youtube.com/@Taskmaster - Be aware there are at least half a dozen international versions of the show; most are good, but nothing beats the UK original hosted by Greg Davies and Alex Horne (the "co-host/assistant," but he actually created the show and writes all the tasks)
Clarkson's Farm (2021)
An Idiot Abroad (2010)
The Moaning of Life (2013)
The Ricky Gervais Show (2010)

US Comedy:

Detroiters (2017) - co-created by the guy who made this show too:
I Think You Should Leave with Tim Robinson (2019)

[edit] Almost forgot I just binged the UK espionage scripted show Slow Horses (2022), starring Gary Oldman as the slovenly head of the "short bus/loser" division of MI5. Three seasons out, with two more planned, at least.

Finally finished ‘Curb Your Enthusiasm’
Recently rewatched ‘The Prisoner’
Just started ‘Better Call Saul’
Prior to these ‘Firefly’, ‘Lucifer’ and ‘Picard’

Monarch: Legacy of Monsters (Apple TV)
American Auto (Peacock)
Reacher, season 2 (Amazon Prime)

Last new great one was Severance, last great old one was Thriller (1973).

I mainly watch old shows on MeTV and Emergency! on a different channel.

Reacher.