I shot and cut this in an evening and I'm pretty happy with what came out. I wanted to have a go doing some bokeh and thought that a fireworks display was the perfect subject.
It was shot at the Spark in the Dark fire work display in Moseley, Birmingham on 3rd November 2012.
Shot on Canon 600D with Canon 50mm prime.
EDIT: For those asking what Bokeh is...
The term comes from the Japanese word boke (暈け or ボケ), which means "blur" or "haze", or boke-aji (ボケ味), the "blur quality". The term bokashi (暈かし) is related, meaning intentional blurring or gradation.