The show's title has several layers - the overall plot is about the head of a development company who's been arrested, the characters themselves are in various states of arrested development, and (initially at least) the company's development work is pretty much on hold ("arrested," one might say), because of the arrests.
Almost all the episode titles are pun-based, eg. "Key Decisions", "Pier Pressure", "Marta Complex", "Shock and Aww".
Blind Justice- a reference to the principle of objectivity in law and the incredibly hard to guess disability of the lead character, Det. Jim Dunbar.
The fourth Blackadder series is called - what else? - Blackadder Goes Forth.
Several Lost episodes have pun-based titles, such as "Lockdown," which features John Locke pinned under a blast door. Michael Giacchino's score is riddled with groan-worthy puns, such as "Thinking Clairely," "Keamy Away From Him," and many, many more.
The Australian TV series Packed to the Rafters is about the Rafter family, whose house is "packed" (after all the parents' adult children moved back in with them).
Rules of Engagement (note: this only applies to the TV show, not the unrelated movie or three unrelated novels, all of which refer to the more standard definition of the term.)
A short-lived Australian TV series titled Above the Law was set in an apartment complex situated above a police station.
Referenced in an episode of Jonathan Creek, "Ghosts Forge", in which a book called The Grave Digger turns out to be about a serious-minded Australian.
Some 90% of Corner Gas episodes are titled with puns combining two or more of the episode's storylines. (I.e. "American Resolution", which focuses on New Year's resolutions and a character fighting a perceived American identity.)
The Not-Pictionary-honest game show Win, Lose or Draw. The Gaelic-language version was given the Completely Different TitleDe Tha Seo ("What's This?")
Titles of Hannah Montana episodes (usually) contain puns on the titles of popular songs ("You Are So Sue-able To Me"; "I Want You To Want Me...To Go To Florida")
Sonny with a Chance is a pun on a weather report ("sunny with a chance of rain") and the title character Sonny Munroe having a chance to succeed in Hollywood.
Lois & Clark, about Superman's Lois Lane and Clark Kent and also a play on the explorers Lewis and Clark.
The Breaking Bad episode "Face Off," in which the season antagonist literally gets his face blown off.
The How I Met Your Mother episode "The Broken Code", which refers to how Ted supposedly broke The Bro Code by holding hands with Robin (who was engaged to Barney at this point of the series).
The Moone Boys episode "Godfellas" is about altar boys (the "God" part) who act like gangsters (a la Goodfellas). Futurama had previously used the exact same pun for an episode that had much to do with God but not much with gangsters.
Elementary's episode titles include "Corpse de Ballet"* "corps de ballet".
A Scare at Bedtime — its title is a parody of A Prayer at Bedtime, a religious programme shown at night on sister channel RTÉ One that is about as far away as possible in content to this one.
A Law & Order episode about a break-in and murder at a fertility clinic (and resulting legal battle over preserved embryos and eggs) has the rather dark Stealth Pun title of "Scrambled." As in, scrambled eggs.
''CSI and spinoffs have had a few, including one called "Organ Grinder," which had nothing to do with that type of musician and everything to do with bodily organs being ground up; for once, the killer wasn't the one doing it; the Medical Examiner had to as part of an experiment.
Sherlock has puns on the Sherlock Holmes stories, such as "The Geek Interpreter" instead of "The Greek Interpreter".