This is a game, whose title is a {{Mondegreen}} of ''Six Degrees of Separation'', in which it is said that any individual can be linked through his or her film roles to actor KevinBacon within six steps. For example, Creator/GeorgeClooney was in ''Film/OceansEleven'' with Creator/MattDamon, Matt Damon was in ''Film/TheDeparted'' with JackNicholson, and Jack Nicholson was in ''Film/AFewGoodMen'' with Kevin Bacon. It should be noted that this spreads across all actors; ''MegumiHayashibara'' can be linked to Kevin in only two moves [[note]] She was in ''Anime/VampireHunterD: Bloodlust'', which included Micheal [=McShane=] in the dub. He was in ''WesternAnimation/{{Balto}}'' with Kevin Bacon[[/note]]. It's often a game for film nerds to test the abilities of each other.

There is a whole website, The Oracle of Bacon, dedicated to this found [[http://oracleofbacon.org/index.php here.]]

Mathematicians have extrapolated this phenomenon and given it a name: "Bacon Number", which sounds like one of those impossibly high numbers with dangerous implications for the future of the universe but is in fact incredibly low. Researchers have demonstrated (''true story!'') that almost everyone has a Bacon Number < 10, due to Kevin Bacon appearing in, mathematically speaking, [[HeyItsThatGuy almost every film]] on the planet. For instance, KevinBacon himself has a Bacon Number of 0. Chew on ''that'', Creator/MrT! (The Oracle of Bacon claims that three persons on the IMDb have Bacon Numbers of 9, the highest listed, but does not say who they are.)

Curiously, the most connected person in acting is not KevinBacon. Research by people who found it important enough to do so discovered that the centre of the Hollywood universe shifts over time, and currently rests with the late Creator/DennisHopper, followed by Creator/HarveyKeitel and Donald Sutherland.

Scientists also have a similar ranking called the Erdős Number, based on co-authorship of mathematical articles with deceased mathematician Paul Erdős. Inevitably there's a combination, the Erdős-Bacon number, based on adding the two together. Thanks to the documentaries, and occasional extra work on math-related films, some mathematicians have EB numbers as low as 3. More surprising are actors who attack the problem from the other side. Danica [=McKellar=] (Winnie from TheWonderYears and bona-fide mathematician) and NataliePortman (wrote a psychology paper at Harvard with an Erdős link) each have Erdős-Bacon numbers of 6. (This ties them with RichardFeynman.)

There is also now the Sabbath Number, based on how many collaborations it takes to get from a given musician to Music/BlackSabbath. And, of course, musicians who've appeared in films have Sabbath-Bacon numbers, and a surprising number of math-geeks turned musos have Sabbath-Erdős numbers. And then there's the Sabbath-Bacon-Erdős number. The only person known to have a single-figure Sabbath-Bacon-Erdős number is physicist, ''TheSimpsons'' guest star, and PinkFloyd guest vocalist StephenHawking.

Ironically, Kevin Bacon did not have anything at all to do with the movie ''Six Degrees of Separation''.

For applications in fiction, see OneDegreeOfSeparation.

No relation to BaconAddiction.
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