QI show to show. "QI" has a philosophy that "everything is interesting if looked at in the right way"; many factual errors in the show have been corrected in later episodes or on the show's blog. For its first five series shown between 2003 and 2007, which corresponded to the first five letters of the alphabet, episodes premiered on BBC Four before receiving their first analogue airing on BBC Two a week later. From 2008 and 2011, the show was moved to BBC One, with an extended-length edition of each episode often broadcast on BBC Two a day or two after
The Mystery of the Sphinx Channel over the next decade. "Mystery" was initially released by Goldhil Home Media as a 95 minute "extended version" on VHS in 1994, and re-released on DVD by UFOTV as a 95 minute "Special Edition" in 2005. The VHS release was described in a 1994 review as "a fascinating combination of science and humbug." Robert M. Schoch criticized the extended version of the documentary, saying "Unfortunately, the original documentary has since been re-edited and expanded with all sorts of extraneous material, some of which I am not at all happy about, and is currently being marketed by 'UFO TV'. It