Participants walk around the room introducing themselves to each other in a range of humorous ways
Invent a series of ways for your participants to introduce themselves to one another, such as:
Greet one another as hula dancers
Greet one another as childhood friends
Greet one another as cavemen
Greet one another as cats
Greet one another as rock stars.
Greet one another as royalty
Greet one another as celebrity chefs
Greet one another as bikers
Greet one another as (various functions in the organization with which you are working, such as Salespeople, HR, Purchasing, Design and Development, etc.
Facilitator can't take him or herself too seriously
1. Have the group mill about in the room. Explain to the group that they will have 3 minutes to greet the first person they come to after the way of greeting is announced.
2. You, the facilitator, are the caller. Call out every 3 minutes a new way in which people should greet one another. After each greeting round, have participants mill about again to find another partner to greet.
Source: Matthew Milo eHow.com