Good stuff all... but if you haven't seen this video of the show last week in Miami shot with a drone & GoPro, it's just mind blowing: Inside the Explosions
All shot with a Canon EOS 7D and a Sigma 17-70 lens at 33 mm with a CP filter, with 800 ISO, 1.6s at f/8. I essentially exposed for the building and at 1.6 s to get multiple bursts and trails.