What to do to throw a rockin,interactive party?which r the good interactive party games?

We are organisin a get2gether function{of an orkut community} wr we will be meetin people whom we dont know...we just know that they are also members of the online community. now , we want to make ppl familiar with each other & form new groups & new friends there.We want the party to be damn rocking & fun-filled...we r gonna be all youngsters of the age grp: 20 to 25! What according to you shall we do to achieve our goal of: 1>make ppl know each other 2>throw a rocking party Also, ppl shall not be that open but nor even very shy.If u know of some interactive or fun games....or somthing similar that would bring fun & help ppl know each other...do tell me abt it. Many ppl give outline answers...i m in search of a ""BEST ANSWER"'...WITH THOROUGH,EXPERIENCED & TRUE INFORMATION! Thanking you, hav a nice day!