The Oracle of Bacon automates the "Six Degrees of Kevin Bacon" parlor game. A form there lets you enter the name of an actor or actress; the system runs off and comes back with the films that link Kevin Bacon to the performer you chose, presumably in six steps or less. I just tried it with Vivien Leigh; she's got a Bacon Number of 3. (Note for enthusiasts: There's also a link at that page to "Star Links": a game supposedly linking ANY actor or actress to any other..)