• Have each person describe him/herself by using the first letter of his/her name. For example: My name is Steve and I like Spaghetti, my favorite candy is Sugarbabies and my favorite animal is a Snake.
• Say your name and what object in a Sears/JC Penney catalog that you are most like and describe why. (i.e. My name is Jeni and I am most like a pair of work boots because I like to be comfortable and don't really care about whether others like the fashion statement I make with them).
• Throw a Koosh ball or pillow or another small non-threatening object to someone. That person says his name and describe why he loves his Koosh ball (let them be as creative as they want to be!). He throws it to the next person, who must introduce herself and the person who went before her, including the "why I love this Koosh" story. Do this until everyone has been introduced.
• Split the group up into pairs. Give them a few minutes to interview each other and then have them introduce one another to the group. This allows two people to get to know each other quickly and form a friendship. It's often easier for people to talk about others than themselves.
• Find a nice bouncy ball, like a four-square ball (this works best on an uncarpeted floor). First player says her name and quickly bounces the ball to another while saying his or her name. See how fast people can keep the ball moving. Try it with two balls if it’s not already too confusing.
• Sentence From a Name. Have everyone pair up with someone they don't know. Each person writes his first name on a piece of paper and exchanges it with his partner. After a minute or two getting to know each other, each person makes up a sentence with words starting with the letter of the other person's name. For example: KEVIN: Koalas Enjoy Vegetables In November.
• Who's it? Best for smaller groups. Each student writes down on a scrap of paper a little-known fact about him or herself (the more unusual, the better). These are then read and everyone tries to guess who it is. A prize can be given to the person who guesses the most correctly.

http://www.svlinc.com/Public/shared/crowdbreaker_group1.htm

For more get acquainted activities, check out:
wilderdom.com/games/NameGames.html