At C2E2, you see lots of people dressed in costume. Most take it very seriously and go for perfection in every detail. Some of them even scare me a bit.
Then you have the opposite. Enter the Storm Trooper below. While he did not scrimp on authenticity, he certainly had fun with his costume.
I think this is one of the coolest and most original costumes I have ever seen.
A Storm Trooper and me at C2E2 in Chicago, IL-April 2012.