It's a game some college kids made up that became quite popular, but it goes on the theory that Kevin Bacon has worked so much with so many people, that if you throw out any entertainment name, you can work through six people and eventually end back at Kevin Bacon!
Six Degrees of Kevin Bacon first surfaced at about the same time. On April 7 1994, a lengthy newsgroup thread headed "Kevin Bacon is the Center of the Universe"  appeared.
The game was created in early 1994 by three students at Albright College, Craig Fass, Brian Turtle, and Mike Ginelli. According to an interview with the three in the Spring 1999 issue of the college's magazine, The Albright Reporter, they were watching Footloose during a heavy snowstorm. When the film was followed by Quicksilver they began to speculate on how many movies Bacon had been in and the number of people he'd worked with.
In the interview Brian Turtle said, "It became one of our stupid party tricks, I guess. People would throw names at us and we'd connect them to Kevin Bacon."
The trio wrote talk show host Jon Stewart a letter telling him that "Kevin Bacon was the center of the entertainment universe" and explaining the game.
They appeared on The Jon Stewart Show and The Howard Stern Show with Bacon to explain the game. Bacon admitted that he initially disliked the game because he believed it was ridiculing him, but he eventually came to enjoy it. The three inventors of the game released the book Six Degrees of Kevin Bacon (ISBN 9780452278448) with an introduction written by Bacon., and a board game based on the concept was released by Endless Games.
By the 2000s, the game was familiar enough to be referred to in United States popular culture. For example, In an episode of NBC's Will & Grace titled "Bacon and Eggs", Bacon makes a guest appearance, playing himself. During this episode, he makes an obvious reference to the game when talking with Will (played by Eric McCormack):
It's kind of fun and there was even a commercial parody of it with Kevin Bacon!
Then, there is doctrine. It is clear that we are not saved by doctrine, except for when it comes to the doctrine of Christ being the Saviour.
I read this and I thought EUREEKA! Because there is not a single doctrine in the Catechism of the Catholic Church that does not come from the doctrine of Christ as our Savior.
So for a little holiday partay fun... throw out a doctrine... any one of them from the catechism and I'll bet within six degrees of separation (probably a lot less) we can get back to the doctrine of Christ being our Savior.
Wouldn't it be a hoot of Kevin Bacon read this! It really would add another dimension to the game!