Wow
 

We want to have an amazing mixer this semester and I have been looking for ideas here but I have not seen a new one yet. Please there has to be someone who has one that was just amazing. Here are the ones that we always do
Toga, jamma jam, around the world, mardi gras, pimp/hoes, White trash, Wedding, 80's, Hawaii, Haunted House, School Girl, grafette, finger paint, dress to empress. I want one that is unique, something that we will be talking about for years. If any one can help please email me. Thank you

There anre many many many threads on this already.
As long as you put a lot of effort into your theme, it will be awesome. Also, parties with activities are more fun than parties without.
Other things you didn't mention:
Foam?
Western?

Maybe you want to make people find the secret location of the prty, so make it a scavenger hunt, and the first people there get the best drinks?

Perhaps have a party where people dress in pairs and you have to figure out who their pair is? Maybe give gag gifts and let people trade? Dunno what exactly you are looking for, but any of these ideas can be put into any party and liven it up.

Look at the other social threads.
ll,
M