Divide into teams and give each team a list of 10 well known movie stars. Take each star and link that person to Kevin Bacon through movies in the least amount of steps possible.
Dustin Hoffman was in Hook with Julia Roberts
Julia Roberts was in Flat-Liners with...Kevin Bacon!!
Bacon factor is 1. Don't count the direct connection.
You should be able to do this with just about any actor or actress from any time. The challange is knowing all of the right movies and who was in them.