I've long been fascinated by television nomenclature.
Boston Public named each episode "Chapter [insert successive number]," beginning with "Chapter One" and ending with "Chapter Eighty-One."
Murder One also named each episode "Chapter [insert successive number]," but for its second season, reset to one and added a "Year Two" suffix. Its series finale was "Chapter Eighteen, Year Two."
Similarly, 24 names each episode by day and hour. For example: "Day 6: 6:00 AM – 7:00 AM."
Seinfeld named each episode "The _____."
Friends named each episode "The One Where/With* _____," deviating only for its series finale ("The Last One"). *more often than not
Nip/Tuck names each episode after the featured patient. Extras…the featured celebrity. Skins…the featured character(s).
The Tick (1994) named each episode in its first season "The Tick vs. _____."
In its first season, Brotherhood named each episode after a Bible verse. In its second season…a Bob Dylan song.
ALF named each episode after a song.
Since its second season, Degrassi: The Next Generation has named each episode after an 80s song.
NewsRadio named the back nine of its second season after Led Zeppelin albums, and episode 13 of its third season "Led Zeppelin Box Set."
That's all I can think of.