I love firework displays - can't get enough of them. I was playing with pixel effects in AS3 and this game came to life out of code experiments I was tinkering with.
There are three waves of firework displays. You must set off each display at the right moment to cause a chain reaction and wow the crowds. You only have 1 click per display, so time your clicking carefully!
Oh, and make sure you have the sound cranked up to 11! :)