Birthday Party Ideas for 19th birthday in NYC?

What do you recommend for a 19th birthday party/outing? I'm thinking a group of about 10 people (though it's not certain). Right now all I've got is: dinner and a movie, bowling at Chelsea Piers, or karaoke.
Update: I'm a girl - and I don't feel like staying at home for my birthday. Thanks for the theme ideas but just not this time around :)
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