For us, NCIS, SVU, Chicago PD and Live Police.
Update two years later. My entire binge-watching has changed:
Law and Order (but only the original series, not the spin-offs Criminal Intent or SVU) I think I’ve seen every episode at least five times, no longer catches my interest the way it used to
The Rockford Files
Police Story It’s no longer available where I live
Adam-12 It’s no longer available where I live
The King of Queens
Two and a Half Men (But not the Ashton Kutcher years) I think I’ve seen every episode at least three times, no longer catches my interest
The Twilight Zone
Alfred Hitchcock Presents I finally watched every episode in chronological order, then moved on and transitioned to
The Alfred Hitchcock Hour
The Outer Limits I only watch it sporadically, perhaps one episode over a several monthlong period
Prime Suspect It’s no longer available where I live
Call the Midwife I lost interest
Are You Being Served? It’s no longer available where I live
The Benny Hill Show It’s no longer available where I live
Prisoner, Cellblock H It’s no longer available where I live
Fawlty Towers It’s no longer available where I live