George Couldn't Tell a Lie....     Can You???
Divide guests into teams of four.  Each team will select one person to tell a lie about themselves.  The other three team members will share something truthful.  Each team will take turns telling it's lie/truths to the other party guests.  After each team has taken it's turn, the remaining teams will confer and decide (as a team) who it thinks has told the truth and who has told a lie.  These findings will be recorded on a score card.  After each team has taken it's turn and all the teams have guessed the “liars”, the score cards will be tallied.  The team that guesses the most “liars” wins.  Each winning team member wins a prize.