* HeyItsThatGuy: A teenage [[NeverMindTheBuzzcocks Simon]] [[Series/GrandmasHouse Amstell]] appeared on an episode in the mid-1990s.
-->'''Simon:''' [[HilariousInHindsight "Can I be the game show host?"]]
* KeepCirculatingTheTapes: Whilst Challenge TV shows all episodes from the Carlton era series whilst Roy was hosting, the original run by TVS (From 1986 to 1993) will likely never see the light of day again, as most all of the TVS library is owned by Disney, and the paperwork for the TVS archives is supposedly lost. However, episodes from the TVS era do exist on Youtube to be watched at any time, presuming no-one tries to call copyright.
* MissingEpisode: To go with the above mention of the TVS episodes never being aired on TV anymore, whilst episodes of the original series are being uploaded to Youtube, some episodes are totally lost, though this would mainly be due to Challenge's original incarnation, The Family Channel, not airing certain episodes, mainly the original celebrity specials.