How about a bollywood dance party ? I can volunteer to put together a compilation of some really upbeat songs with some crazzzyyyy dance moves...(which in hindi is called Jatkaas & matkaas) we can try to imitate that and well, basically have fun !!
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I'm thinking of a 2 mins choreo of ONE of these songs.... my choreo may not match this level but hopefully easy to follow!

Pappu can't Dance (may be an ironical choice for a dance get-together!:D)

http://www.youtube.co...

OR

Nagada - very peppy number

http://www.youtube.co...

OR

Dhoom taana - I like this one bcos its retro bollywood style and quite easy to imitate (in a spoof-y way!)

http://www.youtube.co...

Feel free to browse the videos. Well, you have 3 months to make up your mind...lemme know your choice when you RSVP and based on popular choice we will pick the song for the event. Cheers!