Over the years I've formed a range of favourites, most fall into comedy, sci-fi or quirky and apart from the obvious picks, the rest are probably not that interesting to other people.
Those from more recent years I'd say for myself are those that I revisit and watch when and if I've got time:
Altered Carbon
Astrid.et.Raphaelle (French language )
Catch Me a Killer
Dept Q
Death in Paradise (earlier seasons in particular)
Expanse
Foundation
Halo
Murderbot
Resident Alien
Wednesday