What's the most memorable Halloween costume you can think of?

I can't quite remember what the most creative costume I've ever seen was. This is proabably mostly due to the fact that I have been in college the last few Halloweens and the only costume I remember people being is pimps and hoes, which is not very creative. But there has been a costume I've been wanting to put into practice for a good many years, I just haven't implemented it, mostly on the case of my surroundings. I would like to dress up as a donut, preferably cake, but glazed would work. I would then like to write on this donut "Ich bin ein Berliner" and adopt the voice of JFK, and just see who gets the joke.