In Gilbert and Sullivan's penultimate show "Utopia Limited; or The Flowers of Progress" Captain Corcoran from "H.M.S. Pinafore; or The Lass That Loved a Sailor," one of the earliest G&S shows, is presented as a "Flower of Progress" of English civilization during the first act finale, singing a few bars from HMS Pinafore. Utopia Limited (Utopia Incorporated in contemporary US parlance) and HMS Pinafore thus obviously exist in the same universe.
The idea of "universes" in contemporary conception goes back to the US TV show St. Elsewhere as far as I know (open to correction, but make sure you're talking about contemporary conception).
In the final episode of St. Elsewhere, Tommy Westphall, the autistic son of one of the main characters is seen staring into a snow globe that depicts the eponymous hospital. From that final scene, multiple critics and commenters realized that *numerous* shows were related to the St. Elsewhere universe.
I don't have javascript enabled to do a direct link. Google "Tommy Westphall Universe."
The G&S reference is a grateful nod to Sweet Lips.
Updated On: 1/11/18 at 02:19 AM