What's a really cool theme for a party?

Question

A lot of my friends are designers (and some even costume designers) so something people can really go all out for would be awesome...

Needs to be something different, not just a "letter P" party, or 90's party etc.

Any wacky ideas?

Answer 1

Masquarade Ball

Fairy Tale Characters

Disney Characters

Cartoon Characters

Famous Person Party

Glam Rock Party

Renaissance Ball

Love Boat Theme

Broadway Musical Theme

80s Movies Theme

Answer 2

cirque du soleil?

Answer 3

Alice In Wonder Land

Willy Wonka

A Midsummer Night's Dream

Roaring 20's

Under The Sea

Wizard Of Oz

Vegas

Answer 4

How about your favorite color, example "red theme" let your guest be creative everyone chooses their own costume in a red color (devil, apple, red riding hood, red clown, red dress queen, ect.

Other ideas are out of space theme, olympics theme or  your favorite movie/cartoon.