* ActorAllusion: MeatLoaf's character saying "he would do anything for [the Girls] but he won't do that."
** Roger Moore's character saying "There's no need for any stirring" as he is shaking a [[Film/JamesBond martini]].
** Victoria snarking that Geri should remove her top to awaken a young boy from a coma could be seen as one to Geri Halliwell's stint as a topless model.
* HeyItsThatGuy: Apparently, the Spice Girls are being managed by [[Film/WithnailAndI Withnail]], being driven by [[RockyHorrorPictureShow Eddie]], stalked by [[RockyHorrorPictureShow Riff Raff]], and best friends with [[Series/{{Torchwood}} Toshiko]], whose baby is delivered by [[{{Casualty}} Duffy]].
** Not to mention Series/{{House}} is Poirot in a fantasy sequence.
*** And [[StephenFry Jeeves]] is the unforgiving judge in a dream sequence. ("Call Howtie and the Blowfish!")
** And Elvis Costello tends bar.
** [[Film/WhoFramedRogerRabbit Eddie Valiant]] appears in one fantasy scene as a disguise worn by one of the Spice Girls. [[{{Shrek}} The Fairy Godmother]], [[Film/TheLeagueOfExtraordinaryGentlemen Dr. Jekyll]], and [[Film/AliceInWonderland the Cheshire Cat]] also show up.
** The girls are photographed at one point by [[Series/TheWire Jimmy McNulty]].
** [[{{Film/X-Men}} Nightcrawler]] is an annoying filmmaker trying to make an in-depth documentary about the girls.
** One of the two American filmmakers wants to [[KidsInTheHall CRUSH YOUR HEAD!]] Who's the other one?
*** [[{{Cheers}} NORM!]]
** Note that, despite employing an AllStarCast of British character actors, the film, against all odds, has no shared cast members with the ''Film/HarryPotter'' series. Not unless you count stuntman Kiran Shah.
** Gibbs from Pirates of the Carribean is playing the officer that stops them outside of the concert hall.
* MoneyDearBoy: Creator/RichardEGrant has cheerfully admitted that money was his primary consideration for appearing in the film. It's hard not to suspect that it was a primary consideration for most of the other participants as well.
** SoMyKidsCanWatch was also a motivator for Grant, as his pre-teen daughter was a big fan of the Spice Girls at the time.
* WhatCouldHaveBeen: The Girls' performance of "Leader of the Gang" in Italy (the scene where the backup dancers had their asses hanging out of their costumes) was initally longer and led to a cameo appearance from Gary Glitter himself. However, before the movie was released, Glitter was infamously arrested on child porn charges. After this, everybody got together and agreed his cameo couldn't be cut from the film fast enough, though a bootleg version of the scene has made it to YouTube.