Pantheon Sitcom

They're godlike, they're (usually) all related, and they're stuck together. Since they're so powerful that none of them can significantly hurt the others (most of the time), the plot is mostly about their sibling squabbles and Big Screwed-Up Family moments.

Comic Books

 * The Endless from Sandman.
 * The Literals from Jack Of Fables.
 * The Gods of Arr-Kelaan - Though the stories turn serious quickly.

Literature

 * The Amberites from the Book of Amber.
 * The main characters of Diana Wynne Jones' The Game.
 * The House of the Gods, Dunmanifestin, in Discworld, to the point where priests relay "revelations" that sound a hell of a lot like the plot of a soap opera.
 * Percy Jackson has hints of this going on in the background, whenever Percy deals with the Gods.
 * The Greek gods in Everworld spend most of their time lounging around Mt. Olympus either partying or getting into sudden, violent arguments with each other so strong storms and whirlwinds suddenly appear from their anger. They keep this up even as the armies of a god-eating abomination are massing outside their house.
 * Several of Tom Holt's novels.
 * Michael Moorcock's Dreamers at the End of Time trilogy involves immortal, terribly jaded superhumans dealt with in this way.

Live-Action TV

 * The Greek gods live amongst mortals as a dysfunctional family in the short-lived series Valentine.
 * Hercules: The Legendary Journeys and Xena: Warrior Princess had many humorous episodes where the Greek gods were portrayed as this. Possibly the Trope Codifier.

Mythology

 * Any number of old-school pantheons.
 * Quite a lot of stories about the lesser gods in Hindu mythology come down to "Asuras do something the Devas don't like. Wacky hijinks ensue. Sometimes the higher gods get involved. At the end, Indra learns An Aesop."

Video Games

 * Atrus and family from Myst.
 * The inhabitants of Moriya Shrine in Touhou Project.

Web Comics

 * Homestuck falls into this during hivebent... and gets deconstructed.

Western Animation

 * "Three of Earth's mightiest heroes... Gathered together under one roof... to face the challenge of everyday life! Ladies and Gentlemen, the Justice Friends.
 * On The Adventures of Sam and Max Freelance Police, the episode "Dysfunction of the Gods" has Sam and Max trying to patch up Zeus and Juno's marital problems when their latest spat about Zeus's wandering eye nearly brings about The End of the World as We Know It.