@Dave - that's some expensive bokeh!
I totally agree. The high FPS and AF accuracy of my 7D sure help me capture the frenetic pace of my children.
Here's another from this weekend. At Friday night's sunset before the real fireworks began, I happened to capture someone's small fireworks display during the 8 sec. exposure. 7D and Sigma 30 f/1.4.
I also tried to capture *real* fireworks for the first time later that night. Not sure why I thought the 70-300 would be a good lens choice...should have used the Sigma 30 from my vantage point.