Simple, familiar, quick dialogue game.

Two rows of people facing each other, standing close enough to hear each other over the noise of others speaking. Joker chooses a theme and explains the rules -- both people should talk and listen, one minute, when time is up one line shifts one person to the left. (The last person on the row moves to the other end of their line.)

Often used for introductions. Can also be used for a check-in, or for rapid discussion after another activity.