8 Degrees or Less: Variation of the game Six Degrees of Separation featuring an online game and scoreboard.
Cinema FreeNet: Links actors, directors, and producers together given a source and a target.
Six Degrees of Kevin Bacon: Instructions, sample chains, and helpful hints.
Six Degrees of Separation: Instructions on how to play, and an example chain.
The Oracle of Bacon at Virginia: Home of the popular Kevin Bacon game as well as a similar game that links any actor/actress to any other.