For the first two seasons of Two Guys and a Girl (which Nathan Fillion fans should be ashamed of themselves for if they’re unfamilar with,) every title began with “Two Guys, a Girl and__”
Every One Tree Hill show’s title borrows from a song’s title.
Every Gossip Girl title is a slight parody of a movie title.
Every episode of Remington Steele worked “Steele” into its title.
The Wild Wild West: Every episode was “The Night of . . .”
Caroline in the City: Every episode was “Caroline and . . .”
The Rat Patrol: Every episode was “The . . . Raid”
We should have some fun with these, beyond just listing them. Try to string as many together as you can (and still make some semblance of sense):
“Chuck vs. The One About Caroline and the Night of the Case of the Raid Affair Job.”
The Mentalist uses a reference to the colour Red in every title, but some of them are pretty tenuous. I’m sure they realised early on they’d painted themselves into a corner with that tradition.
The long running NZ show Outrageous Fortune titled all its episodes with Shakesperean quotes.
The short-lived US adaptation Scoundrels, used lines from nursery rhymes instead. It was also remade in the UK as Honest, but I can’t find an episode list.
The old Dragnet radio show had titles that were all of the form “The Big ___”
Third Rock from the Sun tended to use the name “Dick” in episode titles “Nightmare on Dick Street,” “Eleven Angry Men and one Dick” etc.
Monk used the format “Mr.Monk and the ________”
The UK tend not to have titles for episodes. It seems to have fallen out of fashion somewhat.