* CreatorBreakdown: Creator/BillMurray was going through a divorce during filming, which, coupled with arguments with Creator/HaroldRamis over what direction the movie should take, led to their friendship breaking down.
* RoleAssociation: Besides the obvious ones, two minor characters you might not have recognized are Brian Doyle-Murray (Bill Murray's real life brother, also known as [[{{WesternAnimation/TheMarvelousMisadventuresOfFlapjack}} Captain K'nuckles]], or [[{{WesternAnimation/SpongebobSquarepants}} The Flying Dutchman]]) playing the mayor, and StephenTobolowsky (Sandy Ryerson from {{Series/Glee}}) as Ned Ryerson.
* HeyItsThatGuy: Did Phil just buy [[Film/ManOfSteel General Zod]] and his new wife tickets to Wrestlemania?
** Larry, the cameraman is [[Film/SnowDay the Snowplow man]].
* HeyItsThatVoice: The young bride-to-be/bride in the final loop is HyndenWalch, aka ''WesternAnimation/TeenTitans''' Starfire! Glorious!
** The mayor is [[WesternAnimation/TheMarvelousMisadventuresOfFlapjack Captain K'nuckles]].
* RetroactiveRecognition: The groom who receives the ''Wrestlemania'' tickets? MichaelShannon.
* WhatCouldHaveBeen: The original script featured the explanation for the unending loop and its escape clause, but they found by [[DoingInTheWizard leaving it out]] made the film more magical.
** Considering the original explanation involved a curse by an ex reading a "how to do magic" book, it's less "making the film more magical" and more "removing the idiocy".
** They flirted with the idea of a DarkerAndEdgier film, by taking full advantage of the no consequences mentality, (major cruelty, murder etc.), but they decided not to, realizing a more light-hearted comedy would appeal more to the general audience.